fix #561: Set a default true return value for when source_files is empty.

[jarrodlombardo-EventBase]

coverage_info.include_files? needs a default true return value for when source_files is empty.

[jarrodlombardo-EventBase]

@dnedrow @ksuther This fixes #561 afaict.

[ksuther]

I'm happy to make a release if someone can confirm it works for them.

[jarrodlombardo-EventBase]

@gaige can you try this?

[gaige]

I’ll look at it in a couple of hours. I don’t have access to my systems until I get home.

[gaige]

@gaige can you try this?

@jarrodlombardo-EventBase Managed to do it on my phone :-)

Looks good. All 8 runs I tried appear to have consistent output with prior version!

[ksuther]

Thanks for the fix and thanks for checking! I'll make a new release soon.