This fixes test-localized-portlet in for 6.2.x branch. 

The problem is that test portlet leverages on <liferay-util:buffer>, which in 6.2.x version does not trim extra whitespaces from the output, so the test ends up comparing "blah" to "\n\t\tblah\n\t", thus always failing. 

I push this on to branch 6.2.x but this should work ok in master too.