Make warning message informative

Improve warning message clarity by adding node count and maximum
limit information.

Author: yenslife

qtest.c

@@ -613,8 +613,9 @@ bool do_sort(int argc, char *argv[])
             nodes[no++] = &entry->list;
     } else if (current && current->size > MAX_NODES)
         report(1,
-               "Skip the stability check because the number of "
-               "elements is too large.");
+               "Warning: Skip checking the stability of the sort because the "
+               "number of elements %d is too large, exceeds the limit %d.",
+               current->size, MAX_NODES);
 
     if (current && exception_setup(true))
         q_sort(current->q, descend);