s3-rpc_client: protect rpc_pipe_np_smb_conn against a NULL struct rpc_pipe_client.

Guenther

Part of a fix for bug #6697.
(cherry picked from commit 1fe281e25708b999a3e9ef1d5808a79995fbb438)

diff --git a/source/rpc_client/cli_pipe.c b/source/rpc_client/cli_pipe.c
index be84c3934ff97a33ef6bc9e57a7a9d74529065c0..6a5802e97f74320e3865fd51e6651af95c4c29be 100644 (file)
--- a/source/rpc_client/cli_pipe.c
+++ b/source/rpc_client/cli_pipe.c
@@ -2348,6 +2348,9 @@ bool rpccli_get_pwd_hash(struct rpc_pipe_client *cli, uint8_t nt_hash[16])
 
 struct cli_state *rpc_pipe_np_smb_conn(struct rpc_pipe_client *p)
 {
+       if (p == NULL) {
+               return NULL;
+       }
        if (p->transport_type == NCACN_NP) {
                return p->trans.np.cli;
        }