[vlc-devel] [Patches] Fix various bugs in Qt4 module

[Hugo Beauzee-Luyssen]

Hi,

Qt GUI crashes when no extension module has can be found.
These patchs fixes 2 issues :
- closing the soft after toggleing the "view" menu, which would
trigger a bad assert, as the instance hasn't be created at this time,
which can happen.
- doing anything that can update the input state, which would segfault.

Regards,

-- 
Hugo Beauzée-Luyssen
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