qcacmn: Fix uninitialize variables in few policy manager APIs

Few variables are left uninitialized and they are being used
with some random value.

Fix by initializing to default value.

CRs-Fixed: 2232791
Change-Id: I3351cae52c58e963601d53376f42ca8ebf0d3b9a

umac/dfs/dispatcher/src/wlan_dfs_utils_api.c

@@ -536,8 +536,8 @@ static void utils_dfs_get_channel_list(struct wlan_objmgr_pdev *pdev,
 static void utils_dfs_get_chan_list(struct wlan_objmgr_pdev *pdev,
 	struct dfs_channel *chan_list, uint32_t *num_chan)
 {
-	uint8_t pcl_ch[NUM_CHANNELS];
-	uint8_t weight_list[NUM_CHANNELS];
+	uint8_t pcl_ch[NUM_CHANNELS] = {0};
+	uint8_t weight_list[NUM_CHANNELS] = {0};
 	uint32_t len;
 	uint32_t weight_len;
 	int i;