[PATCH 4/4] test: Fix dangling pointer warning

[Dan Williams]

gcc (13.0.1 20230421 (Red Hat 13.0.1-0)) complains:

../test/libndctl.c: In function ‘check_commands’:
../test/libndctl.c:2313:20: warning: storing the address of local variable
‘__check_dimm_cmds’ in ‘check_cmds’ [-Wdangling-poiter=]

...fix it by showing the compiler that the local setting does not escape
the function.

Signed-off-by: Dan Williams <dan.j.willi...@intel.com>
---
 test/libndctl.c |    4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/test/libndctl.c b/test/libndctl.c
index 51245cf4ea98..858110c4dbc1 100644
--- a/test/libndctl.c
+++ b/test/libndctl.c
@@ -2322,7 +2322,8 @@ static int check_commands(struct ndctl_bus *bus, struct 
ndctl_dimm *dimm,
                                        ndctl_bus_get_provider(bus),
                                        ndctl_dimm_get_id(dimm),
                                        ndctl_dimm_get_cmd_name(dimm, i));
-                       return -ENXIO;
+                       rc = -ENXIO;
+                       break;
                }
 
                if (!check->check_fn)
@@ -2331,6 +2332,7 @@ static int check_commands(struct ndctl_bus *bus, struct 
ndctl_dimm *dimm,
                if (rc)
                        break;
        }
+       check_cmds = NULL;
 
        for (i = 0; i < ARRAY_SIZE(__check_dimm_cmds); i++) {
                if (__check_dimm_cmds[i].cmd)