update: fix memory leak
qt4: fix clang warning (implicit conversion)
help: fix help string if colors are disabled
Fix wrong implicit cast
mkv: fix use-after-free and double-free
Qt: make the mouse sensitivity in FSC configurable

Close #9462
Qt4: add a record menu action

Close #8761
fb: fix pointer arithmetic (cid #1048983)
fb: fix palette size (4 channels and not 8)