cmd/asm: remove object file if assembly fails.
Rob Pike authored
Just an oversight. Plus the code had an unnecessary call to os.Exit
that now has a purpose.

Fixes #10372.

Change-Id: I456018f3a01ca05b4501c7f8a4961d48ab8c5e16
Reviewed-on: https://go-review.googlesource.com/8651

Reviewed-by: default avatarMinux Ma <minux@golang.org>
3b1d0d0f

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