try to make png image loading more robust for bug #2425

diff --git a/plugin/pango/gvloadimage_pango.c b/plugin/pango/gvloadimage_pango.c
index 41c93ce17667bbb3f448030df08511c54aa73972..2d2325dfe974de846f3c512773ceea9716fdc7da 100644 (file)
--- a/plugin/pango/gvloadimage_pango.c
+++ b/plugin/pango/gvloadimage_pango.c
@@ -41,6 +41,8 @@ typedef enum {
 static cairo_status_t
 reader (void *closure, unsigned char *data, unsigned int length)
 {
+    if ((FILE *)closure == NULL)
+       return CAIRO_STATUS_READ_ERROR;
     if (length == fread(data, 1, length, (FILE *)closure)
      || feof((FILE *)closure))
         return CAIRO_STATUS_SUCCESS;