[gimp] plug-ins: actually use the return value of fread() in gimppressionist/presets

[Michael Natterer <mitch src gnome org>]

commit 1b34c9220ca559cb6362f69b09e5152ac3ed2052
Author: Michael Natterer <mitch gimp org>
Date:   Sun Feb 5 22:28:09 2012 +0100

    plug-ins: actually use the return value of fread() in gimppressionist/presets

 plug-ins/gimpressionist/presets.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/plug-ins/gimpressionist/presets.c b/plug-ins/gimpressionist/presets.c
index 56effca..4fac07f 100644
--- a/plug-ins/gimpressionist/presets.c
+++ b/plug-ins/gimpressionist/presets.c
@@ -253,7 +253,7 @@ load_old_preset (const gchar *fname)
   len = fread (&pcvals, 1, sizeof (pcvals), f);
   fclose (f);
 
-  return 0;
+  return (len != sizeof (pcvals)) ? -1 : 0;
 }
 
 static unsigned int