Don't crash on erroneous void initializer in temporary statement.
Don't crash on erroneous void initializer in temporary statement.

R=iant
CC=gofrontend-dev
https://golang.org/cl/4251050

anlhord/gofrontend,golang/gofrontend,qskycolor/gofrontend,anlhord/gofrontend,qskycolor/gofrontend,qskycolor/gofrontend,anlhord/gofrontend,qskycolor/gofrontend,qskycolor/gofrontend,anlhord/gofrontend,anlhord/gofrontend,qskycolor/gofrontend,qskycolor/gofrontend,anlhord/gofrontend,golang/gofrontend,golang/gofrontend,anlhord/gofrontend,golang/gofrontend