Fix some possible memleaks in memory.h
Fix a potential return of an unitialized variable in cd-macosx.c
Fix a possible uninitialized assignment of file_size to a session track

Likely will not happen, but it is still a good idea in case this changes
in the future.
Fix memory leaks in memory.c
Fix potential memory leaks in movie.c
Merge pull request #1 from lioncash/misc

Miscellaneous memory leak/uninitialized variable fixes.