Fix multiple return statements in typing-asm, cleanup.

Fix multiple return statements in typing-asm, cleanup.

The last change to typing-asm broke non-final return statements.
Fixing this.

Finishing out a partially completed test that landed by mistake.

BUG= https://code.google.com/p/v8/issues/detail?id=4203
TEST=test-asm-validator
R=titzer@chromium.org,aseemgarg@chromium.org
LOG=N

Committed: https://crrev.com/0acb70baaf95e2497464d22b306a148d49fdfaa6
Cr-Commit-Position: refs/heads/master@{#32096}

[bradn, 2015-11-18 00:10:56]

The CQ bit was checked by bradnelson@google.com

[bradn, 2015-11-18 00:11:02]

The CQ bit was unchecked by bradnelson@google.com

[titzer, 2015-11-18 08:41:59]

On 2015/11/18 00:07:31, bradn wrote:

lgtm

[bradn, 2015-11-18 19:46:14]

The CQ bit was checked by bradnelson@google.com

[commit-bot: I haz the power, 2015-11-18 19:46:16]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1453343003/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1453343003/1

[commit-bot: I haz the power, 2015-11-18 19:47:24]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-11-18 19:48:08]

Patchset 1 (id:??) landed as
https://crrev.com/0acb70baaf95e2497464d22b306a148d49fdfaa6
Cr-Commit-Position: refs/heads/master@{#32096}