Make has_key() a static inline, rather than omitting it altogether.

src/hci/mucurses/kb.c

 bool m_echo;
 bool m_cbreak;
 
-#if 0
-/**
- * Check KEY_ code supported status
- *
- * @v kc	keycode value to check
- * @ret TRUE	KEY_* supported
- * @ret FALSE	KEY_* unsupported
- */
-int has_key ( int kc __unused ) {
-	return TRUE;
-} 
-#endif
-
-static
-int _wgetc ( WINDOW *win ) {
+static int _wgetc ( WINDOW *win ) {
 	int timer, c;
 
 	if ( win == NULL )

src/include/curses.h

 	return TRUE;
 }
 
+static inline int has_key ( int kc __unused ) {
+	return TRUE;
+}
+
 static inline int hline ( chtype ch, int n ) {
 	return whline ( stdscr, ch, n );
 }