Apply the correct orientation to files that may require it (JPEG/TIFF).

--- tumbler-0.1.24.orig/plugins/pixbuf-thumbnailer/pixbuf-thumbnailer.c
+++ tumbler-0.1.24/plugins/pixbuf-thumbnailer/pixbuf-thumbnailer.c
@@ -144,7 +144,7 @@ pixbuf_thumbnailer_new_from_stream (GInp
   GdkPixbufLoader *loader;
   gssize           n_read;
   gboolean         result;
-  GdkPixbuf       *pixbuf = NULL;
+  GdkPixbuf       *pixbuf = NULL, *rot_pixbuf = NULL;
   guchar           buffer[65536];
 
   g_return_val_if_fail (G_IS_INPUT_STREAM (stream), NULL);
@@ -193,7 +193,14 @@ pixbuf_thumbnailer_new_from_stream (GInp
 
   g_object_unref (loader);
 
-  return pixbuf;
+  if (pixbuf)
+    {
+      /* apply the correct orientation to files that may require it */
+      rot_pixbuf = gdk_pixbuf_apply_embedded_orientation (pixbuf);
+      g_object_unref (pixbuf);
+    }
+
+  return rot_pixbuf;
 }