Compiler warnings

[mgerhardy]

I get these compiler warnings with clang and -Wdocumentation

/home/mgerhardy/dev/engine/src/modules/voxelformat/external/libvxl.h:187:6: warning: '@returns' command used in a comment that is attached to a function returning void [-Wdocumentation]
//! @returns *nothing, see result param*
    ~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/home/mgerhardy/dev/engine/src/modules/voxelformat/external/libvxl.h:229:12: warning: parameter 'map' not found in the function declaration [-Wdocumentation]
//! @param map stream to free
           ^~~
/home/mgerhardy/dev/engine/src/modules/voxelformat/external/libvxl.h:229:12: note: did you mean 'stream'?
//! @param map stream to free
           ^~~
           stream

[xtreme8000]

The doc is unfortunately a bit outdated.