[gnome-desktop] bgo#629168 - Don't read past the end of a string

[Federico Mena Quintero <federico src gnome org>]

commit 3fa03455aa799ce882767c94152ce4d9d4e70377
Author: Federico Mena Quintero <federico novell com>
Date:   Tue Oct 26 18:18:03 2010 -0500

    bgo#629168 - Don't read past the end of a string
    
    Signed-off-by: Federico Mena Quintero <federico novell com>

 libgnome-desktop/display-name.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/libgnome-desktop/display-name.c b/libgnome-desktop/display-name.c
index e596da0..9c99d86 100644
--- a/libgnome-desktop/display-name.c
+++ b/libgnome-desktop/display-name.c
@@ -209,7 +209,7 @@ read_pnp_ids (void)
         for (i = 0; lines[i]; i++)
         {
              line = lines[i];
-             if (line[3] == '\t')
+             if (line[0] && line[1] && line[2] && line[3] == '\t' && line[4])
              {
                  code = line;
                  line[3] = '\0';