qcacld-3.0: Fix out buffer overflow and un-intialized variable access

In function pmo_core_send_lphb_enable check index before accessing array.
In function pmo_core_is_wow_applicable initialize vaiable before access.

Change-Id: Iadba3175d10da3e4e311d8ab9e8a850053d3da24
CRs-Fixed: 2162257

components/pmo/core/src/wlan_pmo_lphb.c

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2017 The Linux Foundation. All rights reserved.
+ * Copyright (c) 2017-2018 The Linux Foundation. All rights reserved.
  *
  * Permission to use, copy, modify, and/or distribute this software for
  * any purpose with or without fee is hereby granted, provided that the
@@ -59,7 +59,7 @@ static QDF_STATUS pmo_core_send_lphb_enable(struct wlan_objmgr_psoc *psoc,
 	}
 
 	/* target already configured, now cache command status */
-	if (ts_lphb_enable->enable) {
+	if (ts_lphb_enable->enable && ts_lphb_enable->item > 0) {
 		i = ts_lphb_enable->item - 1;
 		qdf_spin_lock_bh(&psoc_ctx->lock);
 		psoc_ctx->wow.lphb_cache[i].cmd

components/pmo/core/src/wlan_pmo_wow.c

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2017 The Linux Foundation. All rights reserved.
+ * Copyright (c) 2017-2018 The Linux Foundation. All rights reserved.
  *
  * Permission to use, copy, modify, and/or distribute this software for
  * any purpose with or without fee is hereby granted, provided that the
@@ -262,7 +262,7 @@ bool pmo_core_is_wow_applicable(struct wlan_objmgr_psoc *psoc)
 {
 	int vdev_id;
 	struct wlan_objmgr_vdev *vdev;
-	bool is_wow_applicable;
+	bool is_wow_applicable = false;
 	QDF_STATUS status;
 
 	if (!psoc) {