[gtk-vnc] Reset xmit_buffer fields to fix reconnect

[Daniel P. Berrange <dberrange src gnome org>]

commit 55d0ee7ba77e15ac5bcf59ff6160170d5b67784f
Author: Daniel P. Berrange <dan berrange com>
Date:   Sun Aug 15 18:30:19 2010 +0100

    Reset xmit_buffer fields to fix reconnect
    
    If a vnc_connection object was closed and reopened old data
    in the xmit_buffer fields would cause a crash, since it was
    not re-initialized

 src/vncconnection.c |    7 ++++++-
 1 files changed, 6 insertions(+), 1 deletions(-)
---
diff --git a/src/vncconnection.c b/src/vncconnection.c
index 195200d..7525b8d 100644
--- a/src/vncconnection.c
+++ b/src/vncconnection.c
@@ -4201,7 +4201,12 @@ static void vnc_connection_close(VncConnection *conn)
 		priv->name = NULL;
 	}
 
-	g_free (priv->xmit_buffer);
+	if (priv->xmit_buffer) {
+		g_free(priv->xmit_buffer);
+		priv->xmit_buffer = NULL;
+		priv->xmit_buffer_size = 0;
+		priv->xmit_buffer_capacity = 0;
+	}
 
 	if (priv->cred_username) {
 		g_free(priv->cred_username);