ipacm: fix the AP+STA crash issue

In AP+STA mode, wlan-drvier won't
register extended property to
specify which qmux-ID to use for
multi-PDN use-case, make the change
to avoid executing this logic in
AP+STA mode.

Change-Id: I73c5e771a06f20951a600672312172096b10ffcb

ipacm/src/IPACM_Wan.cpp

diff --git a/ipacm/src/IPACM_Wan.cpp b/ipacm/src/IPACM_Wan.cpp
index 2967b50..ffdbdae 100644
--- a/ipacm/src/IPACM_Wan.cpp
+++ b/ipacm/src/IPACM_Wan.cpp
@@ -1619,8 +1619,11 @@
 		{
 			IPACM_Wan::xlat_mux_id = 0;
 			wanup_data->xlat_mux_id = 0;
-			wanup_data->mux_id = ext_prop->ext[0].mux_id;
-			IPACMDBG_H("No xlat configuratio:\n");
+			if(m_is_sta_mode == Q6_WAN)
+				wanup_data->mux_id = ext_prop->ext[0].mux_id;
+			else
+				wanup_data->mux_id = 0;
+			IPACMDBG_H("No xlat configuration\n");
 		}
 		evt_data.event = IPA_HANDLE_WAN_UP;
 		evt_data.evt_data = (void *)wanup_data;