wlan: initialize proto_type in STA and SAP rx packet callback

proto_type is being used in STA and SAP rx packet callbacks
without initializing .

initialize proto_type to 0.

CRs-Fixed: 1115269
Change-Id: I97fc0c582f76772e02528ccfe7ab035c807b1df8
diff --git a/CORE/HDD/src/wlan_hdd_softap_tx_rx.c b/CORE/HDD/src/wlan_hdd_softap_tx_rx.c
index ca996af..5c6e396 100644
--- a/CORE/HDD/src/wlan_hdd_softap_tx_rx.c
+++ b/CORE/HDD/src/wlan_hdd_softap_tx_rx.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2012-2016 The Linux Foundation. All rights reserved.
+ * Copyright (c) 2012-2017 The Linux Foundation. All rights reserved.
  *
  * Previously licensed under the ISC license by Qualcomm Atheros, Inc.
  *
@@ -1648,7 +1648,7 @@
    vos_pkt_t* pVosPacket;
    vos_pkt_t* pNextVosPacket;   
    hdd_context_t *pHddCtx = NULL;   
-   v_U8_t proto_type;
+   v_U8_t proto_type = 0;
 
    //Sanity check on inputs
    if ( ( NULL == vosContext ) || 
diff --git a/CORE/HDD/src/wlan_hdd_tx_rx.c b/CORE/HDD/src/wlan_hdd_tx_rx.c
index 3cae547..b08ac0d 100644
--- a/CORE/HDD/src/wlan_hdd_tx_rx.c
+++ b/CORE/HDD/src/wlan_hdd_tx_rx.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2012-2016 The Linux Foundation. All rights reserved.
+ * Copyright (c) 2012-2017 The Linux Foundation. All rights reserved.
  *
  * Previously licensed under the ISC license by Qualcomm Atheros, Inc.
  *
@@ -2568,7 +2568,7 @@
    struct sk_buff *skb = NULL;
    vos_pkt_t* pVosPacket;
    vos_pkt_t* pNextVosPacket;
-   v_U8_t proto_type;
+   v_U8_t proto_type = 0;
 
    //Sanity check on inputs
    if ( ( NULL == vosContext ) ||