Fix "KEY_LEFT" & "KEY_RIGHT" double press on regular player

With "KEY_LEFT" & "KEY_RIGHT" at map "EMCDVDPlayerActions" works also in the regular player.
After Commit 762b211b37b00a4871708e4b21f4206f85f357c8 ( https://github.com/betonme/e2openplugin-EnhancedMovieCenter/commit/762b211b37b00a4871708e4b21f4206f85f357c8 ) we had otherwise double press for this key.
First from map "EMCDVDPlayerActions", and second from map "EMCGeneralPlayerActions" after key release (flags="b").
But i don't now it's the right way to fix this.