iwlwifi: mvm: initialise ADD_STA before sending it to the firmware

When we unshare a queue, the ADD_STA was not properly
initialised.
Signed-off-by: NEmmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: NLuca Coelho <luciano.coelho@intel.com>

drivers/net/wireless/intel/iwlwifi/mvm/sta.c

@@ -933,7 +933,7 @@ static void iwl_mvm_unshare_queue(struct iwl_mvm *mvm, int queue)
 
 	/* If aggs should be turned back on - do it */
 	if (mvmsta->tid_data[tid].state == IWL_AGG_ON) {
-		struct iwl_mvm_add_sta_cmd cmd;
+		struct iwl_mvm_add_sta_cmd cmd = {0};
 
 		mvmsta->tid_disable_agg &= ~BIT(tid);