query_classifier.cc:skygw_get_canonical: Fixed bug in how strings were passed to replace_literal function. Changed to use item->str_ptr which stores all strings in the same way unlike item->name in which some string values have double quotation.

skygw_utils.cc:Fixed regexp so that it detects literals at the end of line too.

utils/skygw_utils.cc

@@ -1883,7 +1883,7 @@ char* replace_literal(
         const char* replacement)
 {
         const char* prefix = "[ ='\",\\(]"; /*< ' ','=','(',''',''"',',' are allowed before needle */
-        const char* suffix = "[^[:alnum:]]"; /*< alpha-num chars aren't allowed after the needle */
+        const char* suffix = "([^[:alnum:]]|$)"; /*< alpha-num chars aren't allowed after the needle */
         char*       search_re;
         char*       newstr;
         regex_t     re;