don't muck with freed memory (spotted by valgrind)

diff --git a/servers/slapd/back-meta/bind.c b/servers/slapd/back-meta/bind.c
index 1993e4aeb148c271017667f487315b5df6be25d8..cc8fea04b81505c2e24edf6ec19c655cfb359bff 100644 (file)
--- a/servers/slapd/back-meta/bind.c
+++ b/servers/slapd/back-meta/bind.c
@@ -721,9 +721,12 @@ retry:;
                                if ( meta_back_retry( op, rs, &mc, i, sendok ) ) {
                                        goto retry;
                                }
-                               ldap_pvt_thread_mutex_lock( &mi->mi_conninfo.lai_mutex );
-                               LDAP_BACK_CONN_BINDING_CLEAR( msc );
-                               ldap_pvt_thread_mutex_unlock( &mi->mi_conninfo.lai_mutex );
+
+                               if ( mc != NULL ) {
+                                       ldap_pvt_thread_mutex_lock( &mi->mi_conninfo.lai_mutex );
+                                       LDAP_BACK_CONN_BINDING_CLEAR( msc );
+                                       ldap_pvt_thread_mutex_unlock( &mi->mi_conninfo.lai_mutex );
+                               }
 
                                return 0;
                        }