This makes sure we properly recognize a newline character as part of
semicolon insertion, even if the newline appears after a CPP-style
single line comment. The same applies for newlines within C-style multi
line comments.

R=clemensh@chromium.org
TEST=mjsunit/asm/regress-913822
BUG=chromium:913822

Change-Id: I64f098d7e386dea7b7fb6c233c1625425e36bde0
Reviewed-on: https://chromium-review.googlesource.com/c/1373551Reviewed-by: Clemens Hammacher <clemensh@chromium.org>
Commit-Queue: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#58189}