unix: silence STATIC_ASSERT compiler warnings
unix: silence STATIC_ASSERT compiler warnings

Newer versions of gcc complain about the definition of the zero element
array. Squelch that warning by turning it into a one element array.

unknownbrackets/maxcso,urbit/archaeology2,urbit/archaeology2,unknownbrackets/maxcso,urbit/archaeology2,unknownbrackets/maxcso,urbit/archaeology2,urbit/archaeology2,unknownbrackets/maxcso,unknownbrackets/maxcso,urbit/archaeology2,urbit/archaeology2,urbit/archaeology2,unknownbrackets/maxcso,unknownbrackets/maxcso,urbit/archaeology2