documentation update. commented out non-existing WildMidi_Live() in the header.
open_alsa_output: remove stray '\0' from "default" during strcpy()
handle clang static analyzer report that _res_oflg and _res_lflg are
initialized to garbage: initialize them to 0, because savetty() will
do the job properly later.
while we are there move the WildMidi_MasterVolume() call just before
the while loop of command line arguments.
handle clang static analyzer report from file_io.c: "Potential leak of
memory pointed to by 'buffer_file'". if realloc() of malloc()'ed buffer
fails, the original pointer would never be freed, indeed. fixed by not
using realloc() in the unix builds.