--- libwmf-0.2.8.4/src/extra/gd/gd.c

+++ libwmf-0.2.8.4/src/extra/gd/gd.c

@@ -2483,6 +2483,10 @@ BGD_DECLARE(gdImagePtr) gdImageCreateFromXbm (FILE * fd)

     }

   bytes = (w * h / 8) + 1;

   im = gdImageCreate (w, h);

+  if (!im) {

+    return 0;

+  }

+

   gdImageColorAllocate (im, 255, 255, 255);

   gdImageColorAllocate (im, 0, 0, 0);

   x = 0;