[empathy: 48/65] Don't allow calling verify_async() twice

[Cosimo Cecchi <cosimoc src gnome org>]

commit 9005c6a1357b612d9a3bce36dd6326da487ab728
Author: Cosimo Cecchi <cosimoc gnome org>
Date:   Wed Aug 18 16:44:30 2010 +0200

    Don't allow calling verify_async() twice

 libempathy/empathy-tls-verifier.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/libempathy/empathy-tls-verifier.c b/libempathy/empathy-tls-verifier.c
index c2169f0..01548b3 100644
--- a/libempathy/empathy-tls-verifier.c
+++ b/libempathy/empathy-tls-verifier.c
@@ -695,6 +695,8 @@ empathy_tls_verifier_verify_async (EmpathyTLSVerifier *self,
 {
   EmpathyTLSVerifierPriv *priv = GET_PRIV (self);
 
+  g_return_if_fail (priv->verify_result == NULL);
+
   priv->verify_result = g_simple_async_result_new (G_OBJECT (self),
       callback, user_data, NULL);