[gdk-pixbuf] qtif: fix fread() error check

[Ryan Lortie <desrt src gnome org>]

commit 7eccf98299d0142c3f0f9ece7e3fa3dc0929e45b
Author: Ryan Lortie <desrt desrt ca>
Date:   Thu Jan 2 20:53:54 2014 -0500

    qtif: fix fread() error check
    
    fread() doesn't return -1 on error, so don't check for < 0.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=721371

 gdk-pixbuf/io-qtif.c |    5 +----
 1 files changed, 1 insertions(+), 4 deletions(-)
---
diff --git a/gdk-pixbuf/io-qtif.c b/gdk-pixbuf/io-qtif.c
index e0ebe63..404c7e5 100644
--- a/gdk-pixbuf/io-qtif.c
+++ b/gdk-pixbuf/io-qtif.c
@@ -196,10 +196,7 @@ static GdkPixbuf *gdk_pixbuf__qtif_image_load (FILE *f, GError **error)
                 /* Read atom data. */
                 while(hdr.length != 0u)
                 {
-                    rd = (hdr.length > READ_BUFFER_SIZE) ? READ_BUFFER_SIZE : hdr.length;
-
-                    rd = fread(buf, 1, rd, f);
-                    if(rd < 0)
+                    if(fread(buf, 1, rd, f) != rd)
                     {
                         g_set_error(error, GDK_PIXBUF_ERROR,
                                     GDK_PIXBUF_ERROR_CORRUPT_IMAGE,