#50 增加evthread_use_pthreads初始化，保证event_base的线程安全。

platform/src/proxy.cpp

@@ -305,6 +305,9 @@ int main(int argc, char *argv[])
 	/* LOGGER */
 	g_default_proxy->logger = g_default_logger;
 
+    /* adds locking, only required if accessed from separate threads */
+    evthread_use_pthreads();
+
 	/* MAIN THREAD EVBASE */
 	g_default_proxy->evbase = event_base_new();
 	CHECK_OR_EXIT(g_default_proxy->evbase, "Failed at creating evbase for main thread. Exit.");