__nonnull changes

src/hci/mucurses/mucurses.h

@@ -12,10 +12,10 @@
 
 extern SCREEN _ansi_screen;
 
-extern void _wputch ( WINDOW *win, chtype ch, int wrap );
-extern void _wputc ( WINDOW *win, char c, int wrap );
-extern void _wputchstr ( WINDOW *win, const chtype *chstr, int wrap, int n );
-extern void _wputstr ( WINDOW *win, const char *str, int wrap, int n );
-extern void _wcursback ( WINDOW *win );
+extern void _wputch ( WINDOW *win, chtype ch, int wrap ) __nonnull;
+extern void _wputc ( WINDOW *win, char c, int wrap ) __nonnull;
+extern void _wputchstr ( WINDOW *win, const chtype *chstr, int wrap, int n ) __nonnull;
+extern void _wputstr ( WINDOW *win, const char *str, int wrap, int n ) __nonnull;
+extern void _wcursback ( WINDOW *win ) __nonnull;
 
 #endif /* _MUCURSES_H */