nonull regression

[schnittstabil]

Looks like there is a regression in the nonull handling, same as in #43:

$ node -e " console.log( require('glob').sync('xyz', {nonull: true}) ); "
[]

Expected:

[ 'xyz' ]

The behavior changed from 033402b to 3f9b970, i.e. between v4.0.6 and v4.1.0.

NB, the following works as expected:

$ node -e " console.log( require('glob').sync('xyz*', {nonull: true}) ); "
[ 'xyz*' ]

[schnittstabil]

The async behavior also changed some commits later: 5a40b67 (that's also between v4.0.6 and v4.1.0):

$ node -e " require('glob')('xyz', {nonull: true}, function(e, f) { console.log(f) } ); "
[]