Respect ignoreComments in AbstractPatternSniff::processPattern

Currently, In AbstractPatternSniff, when checking to see if indents follow a 
newline, even if ignoreComments is true, if the previous token is 
a comment, an error will be reported.

    if (foo) {
    }// This comment will trigger an error
    else {
    }

In this commit, matching against "}EOLelse {EOL" with ignoredComments on, the comment
is ignored and the if block will validate.

This fixes [Bug #19811](http://pear.php.net/bugs/bug.php?id=19811).