Fix shrink_fibers function in generate-dev-bundle.sh.
Fix shrink_fibers function in generate-dev-bundle.sh.

This logic needs to agree with the following expression:
https://github.com/laverdet/node-fibers/blob/8d7e4ffeb5151ade/build.js#L31

mjmasn/meteor,Hansoft/meteor,Hansoft/meteor,Hansoft/meteor,mjmasn/meteor,Hansoft/meteor,mjmasn/meteor,mjmasn/meteor,mjmasn/meteor,Hansoft/meteor,mjmasn/meteor,Hansoft/meteor,mjmasn/meteor,Hansoft/meteor