s3:libsmb: don't let cli_shutdown() segfault with a NULL cli_state

metze
(similar to commit 47e10ab9a85960c78af807b66b99bcd139713644)
(cherry picked from commit 85aae5e96363d0b5b03d31fb36465121d3381cb2)

diff --git a/source3/libsmb/clientgen.c b/source3/libsmb/clientgen.c
index 1ea8033fc62ab2c11108dcb7b8dfd927c1aac25d..b9f0024892b02cac8edd04c933a2cea21b699b8e 100644 (file)
--- a/source3/libsmb/clientgen.c
+++ b/source3/libsmb/clientgen.c
@@ -695,6 +695,10 @@ void cli_nt_pipes_close(struct cli_state *cli)
 
 void cli_shutdown(struct cli_state *cli)
 {
+       if (cli == NULL) {
+               return;
+       }
+
        if (cli->prev == NULL) {
                /*
                 * Possible head of a DFS list,