parse_cmd() wasn't checking if genhelp_handler() returned NULL. It was simply
assuming that it got a string. On NULL, it now returns an error. Found by
Coverity.

Signed-off-by: Benjamin Marzinski <bmarz...@redhat.com>
---
 multipathd/cli.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/multipathd/cli.c b/multipathd/cli.c
index ca176a99..17795b61 100644
--- a/multipathd/cli.c
+++ b/multipathd/cli.c
@@ -467,6 +467,8 @@ parse_cmd (char * cmd, char ** reply, int * len, void * 
data, int timeout )
 
        if (r) {
                *reply = genhelp_handler(cmd, r);
+               if (*reply == NULL)
+                       return EINVAL;
                *len = strlen(*reply) + 1;
                return 0;
        }
@@ -474,9 +476,11 @@ parse_cmd (char * cmd, char ** reply, int * len, void * 
data, int timeout )
        h = find_handler(fingerprint(cmdvec));
 
        if (!h || !h->fn) {
+               free_keys(cmdvec);
                *reply = genhelp_handler(cmd, EINVAL);
+               if (*reply == NULL)
+                       return EINVAL;
                *len = strlen(*reply) + 1;
-               free_keys(cmdvec);
                return 0;
        }
 
-- 
2.17.2

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