[Bugfix][T106BUG-545]requestGetCellInfoList may cause ril crash

Only Configure:No
Affected branch:master
Affected module:ril
Is it affected on both ZXIC and MTK:Only ZXIC
Self-test:Yes
Doc Update:No

Change-Id: I6d5bc19aebc9d339b7aa00dcef8e47075f247fc2
diff --git a/cap/zx297520v3/zxic_code/zxic_source/zxic_app_open/sdk/ril/reference-ril/ril_mm.c b/cap/zx297520v3/zxic_code/zxic_source/zxic_app_open/sdk/ril/reference-ril/ril_mm.c
index 7bbbb3f..84375d3 100755
--- a/cap/zx297520v3/zxic_code/zxic_source/zxic_app_open/sdk/ril/reference-ril/ril_mm.c
+++ b/cap/zx297520v3/zxic_code/zxic_source/zxic_app_open/sdk/ril/reference-ril/ril_mm.c
@@ -1501,7 +1501,12 @@
 

 	err = at_send_command_singleline("AT+ZEMSCIQ?", "+ZEMSCIQ:", &p_response);

 	if (err < 0 || p_response->success == 0) {

-		RIL_onRequestComplete(t, RIL_E_GENERIC_FAILURE, NULL, 0);

+		//xy.he add for T106BUG-545 start

+		if(NULL!=t)

+		{

+			RIL_onRequestComplete(t, RIL_E_GENERIC_FAILURE, NULL, 0);

+		}

+		//xy.he add for T106BUG-545 end

 		at_response_free(p_response);

 		return;

 	}