fix wrong assumption - that undefined is not traversed by Array.forEach
fix wrong assumption - that undefined is not traversed by Array.forEach

tapjs/node-tap,jinivo/marhert,isaacs/node-tap,evanlucas/node-tap,isaacs/node-tap,evanlucas/node-tap,iarna/node-tap,strongloop-forks/node-tap,iarna/node-tap,tapjs/node-tap,strongloop-forks/node-tap