repair null_pcs hold on bug

app/app_chargerpin_conn_detect.c

@@ -171,6 +171,7 @@ void app_pair_host_process_case1(void)
 				{
 					app_pair_host_uninit();
 					app_pair_chargerpin_Init();
+					return;
 					PAIR_CHARGERPIN_PRINT("mFlash.isHost change %d %d\n",TIME_GetTicks(),mFlash.isHost );
 				}
 //==============================s