nodedev: handle failure to generate mdevctl cmd

Coverity complained that the 'default' case of the switch in
nodeDeviceGetMdevctlCommand() was falling through without initializing
'cmd'. Return NULL in this case even though it should never happen.

Signed-off-by: Jonathon Jongsma <jjongsma@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>

diff --git a/src/node_device/node_device_driver.c b/src/node_device/node_device_driver.c
index e565cc29ecb4de495e2ab380f8661586c15e9569..49f3cc166d8eb433015c10f4ca94337ab2fdd8a0 100644 (file)
--- a/src/node_device/node_device_driver.c
+++ b/src/node_device/node_device_driver.c
@@ -743,7 +743,7 @@ nodeDeviceGetMdevctlCommand(virNodeDeviceDef *def,
     case MDEVCTL_CMD_LAST:
     default:
         /* SHOULD NEVER HAPPEN */
-        break;
+        return NULL;
     }
 
     switch (cmd_type) {