[PATCH] [ASan] Fix use of -asan-instrument-assembly in tests

[Jay Foad]

>>! In D6190#4, @eugenis wrote:
> I just discovered I had a fix for this from half a year ago.
> Not sure which one is better.
> http://reviews.llvm.org/D4718

Thanks! D4718 looks cleaner to me. I assume instrumented assembly will be supported on more targets in the future.

http://reviews.llvm.org/D6190