vcl button: Avoid a potential crash.

Change-Id: I09d0777ef51045054b8e3bc88aba9fb025e6f9ff
Kill some static OUStrings.

Change-Id: Ic06a3b4673446bbadd21f2380c04ec628a6f86a9
Whitespace (and other) cleanup.

Change-Id: I6af10899a3e22c45b973439fd8c8ec6c8faac904
cleanup: We re-init this member all the time anyway.

Also kill some unused measuring.

Change-Id: I69521d36e4da4b50cd58f346f0adb0e5563c8bec