Filter out empty lines from files being added in cgo_library #271
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We have a change that is erroring out on a seemingly unrelated downstream
cgo_library
complaining about not producing the outputgo
.I have no idea why this is happening but the most likely cause I can see is that this line adds an empty filename, which is interpreted as adding one called 'go' to the general outputs, rather than a name to the 'go' group. I'm hoping this should fix, and it seems a reasonable thing to do anyway.