by reverting parts of

    commit de8f6b25
    loplugin:unused-returns in vcl

and reverting

    commit 78bb1a2a
    Fix --enable-kde4 codeHEAD

<noelgrandin> sberg, is that safe ^^ ? I was just about to push a partial revert of the commit that caused the breakage
<sberg> noelgrandin, oops, I'd naively assumed that all impls of Dispatch had just always returned true

Change-Id: Icbca450a76de30a04bc90a2887066840191c9d5f