Bug 678436 - Nested \if messes up list items

Blank spaces after an if statement have to be removed as well. Also spaces before the firs round bracket have to be removed.

src/commentscan.l

@@ -1810,7 +1810,7 @@ RCSTAG    "$"{ID}":"[^\n$]+"$"
 
   /* ----- handle arguments of if/ifnot commands ------- */
 
-<GuardParam>"("                         {
+<GuardParam>{B}*"("                         {
                                           g_guardExpr=yytext;
                                           g_roundCount=1;
                                           BEGIN(GuardExpr);