Fix custom.macos errors

[adrw]

Defaults have not been changed.
/Users/adrw/.files/scripts/.macos: line 27: /System/Library/CoreServices/Menu Extras/Volume.menu: is a directory
2019-06-19 14:00:54.085 defaults[26485:69742] Could not write domain com.apple.universalaccess; exiting
2019-06-19 14:00:54.100 defaults[26487:69748] Could not write domain com.apple.universalaccess; exiting
2019-06-19 14:00:54.115 defaults[26490:69755] Could not write domain com.apple.universalaccess; exiting
Set: Entry, ":FK_StandardViewSettings:IconViewSettings:showItemInfo", Does Not Exist
Set: Entry, ":FK_StandardViewSettings:IconViewSettings:arrangeBy", Does Not Exist
2019-06-19 14:00:55.681 defaults[26788:70530] Could not write domain /.Spotlight-V100/VolumeConfiguration; exiting
disablelocal: Unrecognized verb.