[drwright] Fix GCC 4.6 warning

[Christopher Aillon <caillon src gnome org>]

commit 8a56ebbfb734b6f31ab31a28aa1c35f8cad24faf
Author: Christopher Aillon <caillon redhat com>
Date:   Mon Feb 14 15:07:16 2011 -0800

    Fix GCC 4.6 warning
    
    drw-cc-panel.c: In function 'spinbutton_input_cb':
    drw-cc-panel.c:60:5: warning: implicit declaration of function 'strtoll' [-Wimplicit-function-declaration]
    
    Bug 642339

 src/drw-cc-panel.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/src/drw-cc-panel.c b/src/drw-cc-panel.c
index 9e20575..cf42cc2 100644
--- a/src/drw-cc-panel.c
+++ b/src/drw-cc-panel.c
@@ -22,6 +22,7 @@
 
 #include <config.h>
 
+#include <stdlib.h>
 #include <errno.h>
 #include <string.h>