Cleanup fix#10

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bakaliosdim wants to merge 5 commits intomasterfrom

Commits on Jan 18, 2018

fix cleanup in main in case of errors
bakaliosdim
committed

Commits on Jan 25, 2018

Commits on Jan 28, 2018

Dont use !=NULL comparisons
bakaliosdim
committed

Commits on Jan 29, 2018

Merge branch 'master' into cleanup_fix
ggalan87
authored