Fix wrong output when "bc.." is the last block #81

[kpot]

Passed all tests. Basically I just re-used the same code that was handling (inside the "for" loop) a closure of a previous extended block before the next block could be processed.

[ikirudennis]

Apologies for the delay. I completely forgot this was here.

I typically add new work to the develop branch. It looks like there might be some conflicts if I do that directly, so I think I'll try creating a separate branch to merge these changes into, and then I'll work on merging it into develop and then eventually into master.

Thanks for putting the work into this!