Bug#464753: xpdf: segmentation fault when using mouse wheel

[Christophe Mouilleron]

Hi,

I suggest the patch (in attachment) to correct this bug.
I am note quiet sure that this is the right way to do things,
but I didn't see any strange thing after some tests.

Hope this will help.
Christophe Mouilleron.

PS : if this patch is ok, it may be useful for #512381 also.

#! /bin/sh /usr/share/dpatch/dpatch-run
## fix-437725.dpatch from Arno Renevier <arenev...@fdn.fr>
##
## All lines beginning with `## DP:' are a description of the patch.
## DP: Fix segmentation fault when drawing an empty page

@DPATCH@
--- a/xpdf/XPDFCore.cc  2009-11-06 00:25:32.000000000 +0100
+++ b/xpdf/XPDFCore.cc  2009-11-06 00:26:15.000000000 +0100
@@ -1335,7 +1335,7 @@
   }
 
   // draw the document
-  if (tile) {
+  if (tile && tile->image) {
     XPutImage(display, drawAreaWin, drawAreaGC, tile->image,
              xSrc, ySrc, xDest, yDest, width, height);