fix #123 pop out of meta.alias when used in list

Author: braver

Syntaxes/LESS.sublime-syntax

@@ -998,7 +998,7 @@ contexts:
           push:
             - meta_content_scope: meta.brackets.less
             - include: less-map-lookups
-        - match: '(?=;|$)'
+        - match: '(?=;|,|$)'
           pop: true
         - match: '(\.){{ident}}'
           captures:

Tests/syntax_test_less.less

@@ -588,6 +588,8 @@ Attribute selectors
 //                                ^ punctuation.section.brackets.end
 //                          ^^^^^^ variable.other.less
     display: inline-block;
+    background-color: rgba(#ui-colors.dark[background-090],0.7);
+//                                                        ^ - meta.alias
   }
 }