Annotate unused variables

Signed-off-by: Thomas Graf <tgraf@suug.ch>

src/out_curses.c

@@ -148,7 +148,7 @@ static void put_line(const char *fmt, ...)
 {
 	va_list args;
 	char buf[2048];
-	int x, y;
+	int x, y __unused__;
 
 	memset(buf, 0, sizeof(buf));
 	getyx(stdscr, y, x);