Post innodb-5.1-ss594 modifications.

 Avoiding compilation error ("void * - unknown size").

storage/innobase/mem/mem0mem.c

@@ -144,7 +144,7 @@ mem_heap_cat(
 	void*	res = mem_heap_alloc(heap, len1 + len2);
 
 	memcpy(res, b1, len1);
-	memcpy(res + len1, b2, len2);
+	memcpy((char *)res + len1, b2, len2);
 
 	return(res);
 }