From ff221e679c2dd17be9cd55d3d980859d656bfccd Mon Sep 17 00:00:00 2001
From: Sven Neumann <sven@gimp.org>
Date: Tue, 13 Jul 2010 22:20:15 +0200
Subject: [PATCH] Bug 624275 - Image saved from google docs generates a
 'gimp-image-set-resolution' error message

Only set the image resolution if the resolution in the PNG file
is greater than zero.
---
 plug-ins/common/file-png.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/plug-ins/common/file-png.c b/plug-ins/common/file-png.c
index e906951671..1099d24212 100644
--- a/plug-ins/common/file-png.c
+++ b/plug-ins/common/file-png.c
@@ -896,7 +896,8 @@ load_image (const gchar  *filename,
       png_uint_32  yres;
       gint         unit_type;
 
-      if (png_get_pHYs (pp, info, &xres, &yres, &unit_type))
+      if (png_get_pHYs (pp, info,
+                        &xres, &yres, &unit_type) && xres > 0 && yres > 0)
         {
           switch (unit_type)
             {