GN_Wcl, Close wildcard handle

Register parameters

RST 20H, DEFW $5409

IN:
     IX = wildcard handle
OUT, if call successful:
     Fc = 0
     IX = 0
OUT, if call failed:
     Fc = 1
     A = error code:
          RC_HAND ($08), bad handle

Registers changed after return:
     ...C..HL/..IY same
     AFB.DE../IX.. different

Related calls

GN_Esa, read & write to filename segments
GN_Fcm, compress a filename
GN_Fex, expand a filename
GN_Opw, Open wildcard handler
GN_Pfs, parse filename segment
GN_Prs, parse filename
GN_Wfn, fetch next match for wildcard string (handle)
GN_Wsm, match filename segment to wildcard string