Bug 1303925 - Mac addon build on beta failing following 50 merge r=kmoir DONTBUILD

testing/mozharness/configs/builds/releng_sub_mac_configs/64_add-on-devel.py

@@ -17,7 +17,7 @@ config = {
     'publish_nightly_en_US_routes': False,
     'build_type': 'add-on-devel',
     'platform_supports_post_upload_to_latest': False,
-    'objdir': 'obj-add-on-devel',
+    'objdir': 'obj-firefox',
     'enable_signing': False,
     'enable_talos_sendchange': False,
     #### 64 bit build specific #####