Empty body content sometimes causes stack overflows

java.lang.StackOverflowError
	at java.base/java.util.regex.Pattern$GroupTail.match(Pattern.java:5000)
	at java.base/java.util.regex.Pattern$CharPropertyGreedy.match(Pattern.java:4470)
	at java.base/java.util.regex.Pattern$GroupHead.match(Pattern.java:4969)
	at java.base/java.util.regex.Pattern$BranchConn.match(Pattern.java:4878)
	at java.base/java.util.regex.Pattern$GroupTail.match(Pattern.java:5000)
	at java.base/java.util.regex.Pattern$BmpCharPropertyGreedy.match(Pattern.java:4509)
	at java.base/java.util.regex.Pattern$GroupTail.match(Pattern.java:5000)
	at java.base/java.util.regex.Pattern$BranchConn.match(Pattern.java:4878)
	at java.base/java.util.regex.Pattern$BmpCharProperty.match(Pattern.java:4134)
	at java.base/java.util.regex.Pattern$Branch.match(Pattern.java:4914)
	at java.base/java.util.regex.Pattern$GroupHead.match(Pattern.java:4969)
	at java.base/java.util.regex.Pattern$BmpCharPropertyGreedy.match(Pattern.java:4509)
	at java.base/java.util.regex.Pattern$GroupHead.match(Pattern.java:4969)
	at java.base/java.util.regex.Pattern$Branch.match(Pattern.java:4914)
	at java.base/java.util.regex.Pattern$GroupTail.match(Pattern.java:5000)
	at java.base/java.util.regex.Pattern$Curly.match2(Pattern.java:4621)
	at java.base/java.util.regex.Pattern$Curly.match(Pattern.java:4548)
	at java.base/java.util.regex.Pattern$GroupHead.match(Pattern.java:4969)
	at java.base/java.util.regex.Matcher.match(Matcher.java:1794)
	at java.base/java.util.regex.Matcher.matches(Matcher.java:754)
	at org.apache.commons.configuration2.PropertiesConfiguration$PropertiesReader.doParseProperty(PropertiesConfiguration.java:495)
	at org.apache.commons.configuration2.PropertiesConfiguration$JupPropertiesReader.parseProperty(PropertiesConfiguration.java:327)
	at org.apache.commons.configuration2.PropertiesConfiguration$PropertiesReader.nextProperty(PropertiesConfiguration.java:626)
	at org.apache.commons.configuration2.PropertiesConfigurationLayout.load(PropertiesConfigurationLayout.java:664)
	at org.apache.commons.configuration2.PropertiesConfiguration.read(PropertiesConfiguration.java:1487)
	at org.apache.commons.configuration2.io.FileHandler.loadFromReader(FileHandler.java:715)
	at org.apache.commons.configuration2.io.FileHandler.loadFromTransformedStream(FileHandler.java:785)
	at org.apache.commons.configuration2.io.FileHandler.loadFromStream(FileHandler.java:741)
	at org.apache.commons.configuration2.io.FileHandler.load(FileHandler.java:696)
	at org.apache.commons.configuration2.io.FileHandler.load(FileHandler.java:599)
	at org.apache.commons.configuration2.io.FileHandler.load(FileHandler.java:572)
	at org.apache.commons.configuration2.builder.FileBasedConfigurationBuilder.initFileHandler(FileBasedConfigurationBuilder.java:228)
	at org.apache.commons.configuration2.builder.FileBasedConfigurationBuilder.initResultInstance(FileBasedConfigurationBuilder.java:245)
	at org.apache.commons.configuration2.builder.FileBasedConfigurationBuilder.initResultInstance(FileBasedConfigurationBuilder.java:53)
	at org.apache.commons.configuration2.builder.BasicConfigurationBuilder.createResult(BasicConfigurationBuilder.java:297)
	at org.apache.commons.configuration2.builder.BasicConfigurationBuilder.getConfiguration(BasicConfigurationBuilder.java:415)
	at org.xwiki.contrib.confluence.filter.input.ConfluenceProperties.create(ConfluenceProperties.java:63)
	at org.xwiki.contrib.confluence.filter.input.ConfluenceXMLPackage.getObjectProperties(ConfluenceXMLPackage.java:2596)
	at org.xwiki.contrib.confluence.filter.input.ConfluenceXMLPackage.getObjectProperties(ConfluenceXMLPackage.java:2589)
	at org.xwiki.contrib.confluence.filter.input.ConfluenceXMLPackage.getBodyContentProperties(ConfluenceXMLPackage.java:1761)
	at org.xwiki.contrib.confluence.filter.input.ConfluenceXMLPackage.getObjectProperties(ConfluenceXMLPackage.java:2600)
	at org.xwiki.contrib.confluence.filter.input.ConfluenceXMLPackage.getObjectProperties(ConfluenceXMLPackage.java:2589)
	at org.xwiki.contrib.confluence.filter.input.ConfluenceXMLPackage.getBodyContentProperties(ConfluenceXMLPackage.java:1761)
        [...a lot of lines...]
	at org.xwiki.contrib.confluence.filter.input.ConfluenceXMLPackage.getObjectProperties(ConfluenceXMLPackage.java:2600)
	at org.xwiki.contrib.confluence.filter.input.ConfluenceXMLPackage.getObjectProperties(ConfluenceXMLPackage.java:2589)
	at org.xwiki.contrib.confluence.filter.input.ConfluenceXMLPackage.getBodyContentProperties(ConfluenceXMLPackage.java:1761)
	at org.xwiki.contrib.confluence.filter.input.ConfluenceXMLPackage.getObjectProperties(ConfluenceXMLPackage.java:2600)
	at org.xwiki.contrib.confluence.filter.input.ConfluenceXMLPackage.getObjectProperties(ConfluenceXMLPackage.java:2589)
	at org.xwiki.contrib.confluence.filter.input.ConfluenceXMLPackage.getBodyContentProperties(ConfluenceXMLPackage.java:1761)