win: always leave crit section in get_proc_title

fix #1235

src/win/util.c

@@ -425,6 +425,7 @@ uv_err_t uv_get_process_title(char* buffer, size_t size) {
    * we must query it with getConsoleTitleW
    */
   if (!process_title && uv__get_process_title() == -1) {
+    LeaveCriticalSection(&process_title_lock);
     return uv__new_sys_error(GetLastError());
   }