Check of 'halign' in ImageMacro is missing (maybe a 'copy&paste bug')

Code in class com.xpn.xwiki.render.macro.ImageMacro:

Line 89-92

String halign = params.get("halign", 4);
if (null == align || align.indexOf("=") != -1) {
  align = null;
}

The align variable in the if() should probably be halign