Manual tidyup of one comment for trace.h.
Manual tidyup of one comment for trace.h.

librsync/librsync,sourcefrog/librsync,sourcefrog/librsync,dbaarda/librsync,sourcefrog/librsync,librsync/librsync,librsync/librsync,librsync/librsync,dbaarda/librsync,dbaarda/librsync,sourcefrog/librsync,dbaarda/librsync