Snippets for darktable 5.6.0 from Alpine riscv64

Sourced from https://build.alpinelinux.org/buildlogs/build-edge-riscv64/community/darktable/darktable-5.6.0-r0.log.

• /home/buildozer/aports/community/darktable/src/darktable-5.6.0/src/external/rawspeed/src/librawspeed/decompressors/LJpegDecompressor.cpp:174:10: warning: 'MEM[(struct array *)&preds]' may be used uninitialized [-Wmaybe-uninitialized]
    174 |   return preds;
        |          ^
  

• /home/buildozer/aports/community/darktable/src/darktable-5.6.0/src/external/rawspeed/src/librawspeed/decompressors/LJpegDecompressor.cpp:174:10: warning: 'preds' may be used uninitialized [-Wmaybe-uninitialized]
    174 |   return preds;
        |          ^