[gimp/gimp-2-10] plug-ins: fix cherry picking of commit fb38e42

[Jacob Boerema <jboerema src gnome org>]

commit f4420f51a017fc29e32b145f979000997490e505
Author: Jacob Boerema <jgboerema gmail com>
Date:   Fri Mar 5 15:16:27 2021 -0500

    plug-ins: fix cherry picking of commit fb38e42

 plug-ins/file-faxg3/faxg3.c | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)
---
diff --git a/plug-ins/file-faxg3/faxg3.c b/plug-ins/file-faxg3/faxg3.c
index 905075a725..07ef436c67 100644
--- a/plug-ins/file-faxg3/faxg3.c
+++ b/plug-ins/file-faxg3/faxg3.c
@@ -273,7 +273,7 @@ load_image (const gchar  *filename,
     {
       g_set_error (error, G_FILE_ERROR, G_FILE_ERROR_FAILED,
                    _("Could not create buffer to process image data."));
-      return NULL;
+      return -1;
     }
 
   bp = &bitmap[row * MAX_COLS / 8];
@@ -540,7 +540,7 @@ emitgimp (gint         hcol,
                    _("Invalid image dimensions (%d x %d). "
                      "Image may be corrupt."),
                    hcol, row);
-      return NULL;
+      return -1;
     }
 
   image_ID = gimp_image_new (hcol, row, GIMP_GRAY);
@@ -548,7 +548,7 @@ emitgimp (gint         hcol,
     {
       g_set_error (error, G_FILE_ERROR, G_FILE_ERROR_FAILED,
                    _("Could not create image."));
-      return NULL;
+      return -1;
     }
   gimp_image_set_filename (image_ID, filename);
 
@@ -573,8 +573,8 @@ emitgimp (gint         hcol,
       g_set_error (error, G_FILE_ERROR, G_FILE_ERROR_FAILED,
                    _("Could not create buffer to process image data."));
       g_object_unref (buffer);
-      gimp_image_delete(image);
-      return NULL;
+      gimp_image_delete(image_ID);
+      return -1;
     }
 
   xx = 0;