ti84: fix a-lock debouncing bug

Yup, it was a deja vu. I remember now.

blk/569

@@ -4,7 +4,7 @@
         DROP
         1+ DUP 7 = IF DROP 0 THEN ( inc gid )
         1 OVER LSHIFT 0xff -^ ( group dmask ) _get
-    DUP 0xff = NOT UNTIL
+    DUP 0xff = NOT UNTIL _wait
     ( gid dmask )
     0xff XOR ( dpos ) 0 ( dindex )
     BEGIN 1+ 2DUP RSHIFT NOT UNTIL 1-

blk/570

@@ -7,6 +7,5 @@
             IF _tbl^ _2nd@ IF _alock^ THEN THEN
         SWAP 0x81 = _2nd!
         _gti + C@
-    DUP 0 0x80 >< UNTIL ( loop if not in range )
-    _wait ;
+    DUP 0 0x80 >< UNTIL ( loop if not in range ) ;
 : KBD$ 0 [ KBD_MEM LITN ] C! ;