Fixed missing NULL set of pointer after free

Due to this double free was possible if disconnect_and_clear was
called multiple times.

diff --git a/libfreerdp/core/connection.c b/libfreerdp/core/connection.c
index ab613b3..3643d0f 100644 (file)
--- a/libfreerdp/core/connection.c
+++ b/libfreerdp/core/connection.c
@@ -394,6 +394,7 @@ BOOL rdp_client_disconnect(rdpRdp* rdp)
                return FALSE;
 
        codecs_free(context->codecs);
+       context->codecs = NULL;
        return TRUE;
 }