[recipes] Fix export or recipes with local images

[Matthias Clasen <matthiasc src gnome org>]

commit 84592a058ecdad999f1b1b24e3aa64372e5bdac9
Author: Matthias Clasen <mclasen redhat com>
Date:   Sat Apr 15 23:59:44 2017 -0400

    Fix export or recipes with local images
    
    We were using the wrong path for images that have been
    locally added. These are not in cache dir, but in data dir.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=781292

 src/gr-image.c |    7 +++++--
 1 files changed, 5 insertions(+), 2 deletions(-)
---
diff --git a/src/gr-image.c b/src/gr-image.c
index a26db44..c018133 100644
--- a/src/gr-image.c
+++ b/src/gr-image.c
@@ -193,9 +193,12 @@ get_image_cache_path (GrImage *ri)
 }
 
 char *
-gr_image_get_cache_path (GrImage *image)
+gr_image_get_cache_path (GrImage *ri)
 {
-        return get_image_cache_path (image);
+        if (ri->path[0] == '/')
+                return g_strdup (ri->path);
+        else
+                return get_image_cache_path (ri);
 }
 
 static char *