[gnome-keyring] Include missing header.

[Stefan Walter <stefw src gnome org>]

commit 79c195c6538a9440d04ea59ad3dbff5520fa8d0a
Author: Jeff Cai <jeff cai sun com>
Date:   Sun Feb 7 18:40:06 2010 +0000

    Include missing header.
    
    Fixes build on Solaris. Bug #606713

 daemon/prompt/gkd-prompt.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/daemon/prompt/gkd-prompt.c b/daemon/prompt/gkd-prompt.c
index 5c63833..104db8f 100644
--- a/daemon/prompt/gkd-prompt.c
+++ b/daemon/prompt/gkd-prompt.c
@@ -35,6 +35,8 @@
 
 #include <gcrypt.h>
 
+#include <sys/wait.h>
+
 #define DEBUG_PROMPT 1
 #define DEBUG_STDERR 0