compext/Png.c: Nullify after free

956caeb8 · Ulrich Sibiller · Mike Gabriel · e440e722 · 956caeb8
Commit 956caeb8 authored Jun 20, 2019 by Ulrich Sibiller Committed by Mike Gabriel Jun 22, 2019
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Png.c nx-X11/programs/Xserver/hw/nxagent/compext/Png.c +2 -2

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--- a/nx-X11/programs/Xserver/hw/nxagent/compext/Png.c
+++ b/nx-X11/programs/Xserver/hw/nxagent/compext/Png.c
@@ -532,8 +532,8 @@ char *PngCompressData(XImage *image, int *compressed_size)
              dy, h);
  #endif

-  free(srcBuf);
-  free(image_index);
+  free(srcBuf); srcBuf = NULL;
+  free(image_index); image_index = NULL;

  if (setjmp(png_jmpbuf(png_ptr)))
  {