lposix.c: more minor whitespace fixes
lposix.c: more minor whitespace fixes

rrthomas/luaposix,jimmyharris/luaposix,jimmyharris/luaposix,rrthomas/luaposix,luaposix/luaposix,ardje/luaposix,zevv/luaposix,snegovick/luaposix,snegovick/luaposix,zevv/luaposix,ardje/luaposix