Free takes void* and doesn't need any cast anymore.

src/array.c

src/backend.cmod

src/builtin_functions.c

src/cpp.c

src/docode.c

src/dynamic_load.c

src/encode.c

src/fdlib.c

src/hashtable.c

src/interpret.c

src/mapping.c

src/modules/Image/encodings/ras.c

src/modules/Pipe/pipe.c

src/modules/Regexp/pike_regexp.c

src/modules/_Stdio/file.c

src/modules/system/nt.c

src/peep.c

src/queue.c

src/sscanf.c

src/stralloc.c