qcacmn: Add NULL pointer check for KW issues

Add NULL pointer check in function hif_send_single() and
htc_dump_counter_info() for KW issues.

Change-Id: I4b020c566b14b28a825c13752dccf67b5f8bb837
CRs-Fixed: 2675205

hif/src/hif_main.c

@@ -1562,6 +1562,9 @@ QDF_STATUS hif_send_single(struct hif_opaque_softc *osc, qdf_nbuf_t msdu,
 {
 	void *ce_tx_hdl = hif_get_ce_handle(osc, CE_HTT_TX_CE);
 
+	if (!ce_tx_hdl)
+		return QDF_STATUS_E_NULL_VALUE;
+
 	return ce_send_single((struct CE_handle *)ce_tx_hdl, msdu, transfer_id,
 			len);
 }

htc/htc_send.c

@@ -69,6 +69,9 @@ void htc_dump_counter_info(HTC_HANDLE HTCHandle)
 {
 	HTC_TARGET *target = GET_HTC_TARGET_FROM_HANDLE(HTCHandle);
 
+	if (!target)
+		return;
+
 	AR_DEBUG_PRINTF(ATH_DEBUG_ERR,
 			("\n%s: ce_send_cnt = %d, TX_comp_cnt = %d\n",
 			 __func__, target->ce_send_cnt, target->TX_comp_cnt));