Small resnet layers segfault

[jeffsetter]

I'm experiencing a segfault when running the unoptimized version of this resnet layer. Larger layers seem to work fine.

App: #170

[jeffsetter]

On suggestion from Joey, I tried his other branch (glb) that uses heap memory. This seems to fix the issue.
Merging the glb branch (or at least that feature) should happen.