lposix.c: fix error-case space leak in Pread; fixes issue #78
lposix.c: fix error-case space leak in Pread; fixes issue #78

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