Fix issue 15235: inline asm: silent ICE (segfault) in asm_add_exp()

[benjones]

return once the first memory error is found rather than falling through and goto-ing back to it a bunch of times

Also, this file looks like it could use some refactoring. I may look into that next

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Bugzilla references

Auto-close	Bugzilla	Severity	Description
✓	15235	normal	inline asm: silent ICE (segfault) in asm_add_exp()

Testing this PR locally

If you don't have a local development environment setup, you can use Digger to test this PR:

dub run digger -- build "master + dmd#11166"

[benjones]

Looks like the circleci error is a debug printf statement in my fail_compile test being output... Should I change it to debug(debuga) or something that has to be enabled in the source?

[Geod24]

Looks like the circleci error is a debug printf statement in my fail_compile test being output... Should I change it to debug(debuga) or something that has to be enabled in the source?

Yes, sounds like this codepath wasn't covered before, because that's definitely not a message intended for the user.

[benjones]

I think this is g2g now