[gcr] egg: Fix libgcrypt integration for older libgcrypt

[Stefan Walter <stefw src gnome org>]

commit ea4f1756630f7ee435f127224a3724fa0c6bde2c
Author: Stef Walter <stefw redhat com>
Date:   Sat Sep 13 08:12:08 2014 +0200

    egg: Fix libgcrypt integration for older libgcrypt
    
    There was a missing pthread.h header

 egg/egg-libgcrypt.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/egg/egg-libgcrypt.c b/egg/egg-libgcrypt.c
index a833a9d..7c3e889 100644
--- a/egg/egg-libgcrypt.c
+++ b/egg/egg-libgcrypt.c
@@ -27,6 +27,7 @@
 #include <gcrypt.h>
 
 #include <errno.h>
+#include <pthread.h>
 
 EGG_SECURE_DECLARE (libgcrypt);