Update libopenmpt to version 0.5.14 / rev 33 via SR 942189
    
    https://build.opensuse.org/request/show/942189
    by user mia + dimstar_suse
    - Update to 0.5.14:
      * [Sec] Possible out-of-bounds read in Chorus plugin with NaN
        plugin parameters. Most implementations of the “fast math”
        compiler optimizations will prevent this crash but it is not
        guaranteed. (r16096)
      * [Bug] Fixed undefined behaviour with custom tunings found with
        ubsan.
      * OPL: Improved channel allocation strategy when there are lots
        of faded-out notes.
      * MOD: Digital Tracker MODs have four unknown bytes right after
        the magic bytes which seem to be ignored even by Digital
        Tracker itself. Just skip over them.
      * The logic when to turn off the resonant filter was broken in
        some edge cases since libopenmpt 0.5.1.
      * IMF: Implemented XE1-XE3 commands, which disable individual
        envelopes. Command Nxy (cutoff slide + resonance) i