(disassoc): src/lib/player/accept.c rev. 1.18.2.1 broke the server

(disassoc): src/lib/player/accept.c rev. 1.18.2.1 broke the server
when it runs as daemon, because it relies on player_socket remaining
open across disassoc().  Change disassoc() to only close file
descriptors 0..2 instead of 0..9.  By the way, it should really
redirect 0..2 to /dev/null instead.