Reported by Andy Chenee.

This reverts commit 8c243091.

Not sure how thread-safety works here though.

This reverts commit 3c55f6d8.

This is dead code (which does generate a warning!!!)

This reverts commit 3d82d569.

This reverts commit 908d0b93.

Spotted by a warning.

The playlist needs to be fixed here not to use signed for its size, but...

nuv: Fix some warnings and fix an issue where some unitialized pointer access could lead to a crash.