devel/gobject-introspection fix

[Dominic Fandrey]

Dominic Fandrey wrote:
> Also the port is not make -j safe, I suggest setting MAKE_JOBS_UNSAFE
> in the ports Makefile.

I take that one back. There appears to be another reason why it doesn't
build on my system. Normally these "file does not exist" errors are
make -j problems, but apparently this is not the case here.

Regards

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