Merge pull request #6197 from risaacson/issues_5116

When looking for double colon len(line) must be longer then 1.

lib/ansible/utils/__init__.py

@@ -375,7 +375,7 @@ It should be written as:
 """
         return msg
 
-    elif len(probline) and len(probline) >= column and probline[column] == ":" and probline.count(':') > 1:
+    elif len(probline) and len(probline) > 1 and len(probline) >= column and probline[column] == ":" and probline.count(':') > 1:
         msg = msg + """
 This one looks easy to fix.  There seems to be an extra unquoted colon in the line 
 and this is confusing the parser. It was only expecting to find one free