# HG changeset patch
# User Matti Hamalainen <ccr@tnsp.org>
# Date 1526232869 -10800
# Node ID 72f809e6eb3cab6a39deb693a39029d31372cd42
# Parent  4288b21e97b99d46c48ab41a9e5ba65c994f9369
Add NULL check for growbuf pointer.

diff -r 4288b21e97b9 -r 72f809e6eb3c tools/lib64gfx.c
--- a/tools/lib64gfx.c	Sun May 13 10:07:25 2018 +0300
+++ b/tools/lib64gfx.c	Sun May 13 20:34:29 2018 +0300
@@ -1102,7 +1102,7 @@
 {
     int res;
 
-    if (img == NULL || fmt == NULL)
+    if (buf == NULL || img == NULL || fmt == NULL)
         return DMERR_NULLPTR;
 
     if ((fmt->flags & DM_FMT_WR) == 0)