ipacm: Update xlat debug print to avoid ipacm crash

ext_prop var is accessed in STA-SAP scenario which casue for
ipacm crash. Update debug print.

Change-Id: I19dde71e7e52b70fad7c6c07bf9e82ed159e0040
diff --git a/ipacm/src/IPACM_Wan.cpp b/ipacm/src/IPACM_Wan.cpp
index 11c371c..3447207 100644
--- a/ipacm/src/IPACM_Wan.cpp
+++ b/ipacm/src/IPACM_Wan.cpp
@@ -1897,10 +1897,13 @@
 			IPACM_Wan::xlat_mux_id = 0;
 			wanup_data->xlat_mux_id = 0;
 			if(m_is_sta_mode != WLAN_WAN) //both q6_wan/q6_mhi_wan
+			{
 				wanup_data->mux_id = ext_prop->ext[0].mux_id;
+				IPACMDBG_H("mux_id: %d\n", wanup_data->mux_id);
+			}
 			else
 				wanup_data->mux_id = 0;
-			IPACMDBG_H("No xlat configuration mux-id %d %d\n", ext_prop->ext[0].mux_id, wanup_data->mux_id);
+			IPACMDBG_H("No xlat configuration\n");
 		}
 		evt_data.event = IPA_HANDLE_WAN_UP;
 		evt_data.evt_data = (void *)wanup_data;