macos: fix startup twice
diff --git a/java/org/cef/CefApp.java b/java/org/cef/CefApp.java
index fdd3767..adfb05f 100644
--- a/java/org/cef/CefApp.java
+++ b/java/org/cef/CefApp.java
@@ -607,6 +607,7 @@
         if (OS.isMacintosh() && args.length == 0) {
             // this condition is to be removed after adapting IJ
             startupAsync(JCefAppConfig.getJbrFrameworkPathOSX());
+            return true;
         }
 
         String frameworkPathOSX = null;