libgeom(3): note that stdio.h is required when referencing gctl_dump(3)
gctl_dump(3) is only exposed when stdio.h is #include'd first, per its addition in r112510. The reasoning noted for the conditional "exposure" of the function was to "limit #include pollution". This addresses an issue I found with the documentation when looking at bug 218809, which in turn addresses a -Wimplicit-function-declaration compiler warning in `tools/regression/geom_gpt/test.c` (it uses gctl_dump(3)). MFC after: 5 weeks Sponsored by: Dell EMC Isilon
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@ -63,6 +63,10 @@
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.Sh LIBRARY
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.Lb libgeom
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.Sh SYNOPSIS
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.Bd -literal
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/* stdio.h is only required for `gctl_dump` */
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.Ed
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.In stdio.h
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.In libgeom.h
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.Ss "Statistics Functions"
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.Ft void
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