exe/gloc in gloc-0.2.0 vs exe/gloc in gloc-0.2.1

@@ -66,9 +66,10 @@
   end
   source_lines = File.read(file).each_line
   stats_for_ext.file_count    += 1
   stats_for_ext.line_count    += source_lines.count
   stats_for_ext.blank_count   += source_lines.grep(BLANKS).count
+  next unless COMMENTS[file_ext] # only scan for comments if a regex exists!
   stats_for_ext.comment_count += source_lines.grep(COMMENTS[file_ext]).count
 }
 
 source_stats.values.each do |stats_for_ext|
   stats_for_ext.code_count = stats_for_ext.line_count - (