use suggested _execve() when restarting server

src/server.c

@@ -1860,7 +1860,7 @@ int restartServer(int flags, mstime_t delay) {
     if (delay) usleep(delay*1000);
     zfree(server.exec_argv[0]);
     server.exec_argv[0] = zstrdup(server.executable);
-    execve(server.executable,server.exec_argv,environ);
+    IF_WIN32(_execve,execve)(server.executable,server.exec_argv,environ);
 
     /* If an error occurred here, there is nothing we can do, but exit. */
     _exit(1);