branches/zip: mem_heap_block_free(): If innodb_use_sys_malloc is set,

do not tell Valgrind that the memory is free, to avoid
a bogus warning in Valgrind's built-in free() hook.

mem/mem0mem.c

@@ -475,14 +475,16 @@ mem_heap_block_free(
 	len = block->len;
 	block->magic_n = MEM_FREED_BLOCK_MAGIC_N;
 
+	if (!srv_use_sys_malloc) {
 #ifdef UNIV_MEM_DEBUG
-	/* In the debug version we set the memory to a random combination
-	of hex 0xDE and 0xAD. */
+		/* In the debug version we set the memory to a random
+		combination of hex 0xDE and 0xAD. */
 
 		mem_erase_buf((byte*)block, len);
 #else /* UNIV_MEM_DEBUG */
 		UNIV_MEM_ASSERT_AND_FREE(block, len);
 #endif /* UNIV_MEM_DEBUG */
+	}
 
 #ifndef UNIV_HOTBACKUP
 	if (type == MEM_HEAP_DYNAMIC || len < UNIV_PAGE_SIZE / 2) {