[gconf] kill a SEGV if saved_state has blank lines in it.

[Michael Meeks <michael src gnome org>]

commit 2f65528b0f023c3388cf242d7caf2a18121eb107
Author: Michael Meeks <michael meeks novell com>
Date:   Thu Apr 22 13:54:47 2010 +0100

    kill a SEGV if saved_state has blank lines in it.

 gconf/gconfd.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/gconf/gconfd.c b/gconf/gconfd.c
index 38a8423..66c18ff 100644
--- a/gconf/gconfd.c
+++ b/gconf/gconfd.c
@@ -2233,7 +2233,7 @@ read_line (FILE *f)
         }
 
       len = strlen (buf);
-      if (buf[len - 1] == '\n')
+      if (len > 0 && buf[len - 1] == '\n')
 	buf[--len] = '\0';
 
       if (retval == NULL)