VLCMediaPlayer: Fix potential unknown selector error for some messages sent to delegate

Given I tested the SimplePlayback example project with VLCKit master
When I pressed play in UI to start the media playback
Many runtime exceptions happened due to unimplemented delegate methods

These changes are a proposal to fix it

changed the description

Thanks. This fixes #697 (closed).

approved this merge request

added 2 commits

• b1ab4f47 - 1 commit from branch videolan:master
• d24c647a - VLCMediaPlayer: Fix potential unknown selector error for some messages sent to delegate

Compare with previous version

changed milestone to %4.0

enabled an automatic merge when the pipeline for d24c647a succeeds

merged

mentioned in issue #697 (closed)