#51: iteration 2

[lgtm-com[bot]]

This pull request fixes 14 alerts when merging da4250906bca1af2ba49ba9b55eecffdc7c518d0 into dc56546704ec13383f486498a4c363fc1d2dd8e2 - view on LGTM.com

fixed alerts:

• 5 for FIXME comment
• 3 for Resource not released in destructor
• 3 for 'new[]' array freed with 'delete'
• 2 for Missing return statement
• 1 for Mismatching new/free or malloc/delete