fixed compiler warnings issued by:

gcc 4.3
	curl.h gcc type-checking
	glibc with enabled FORTIFY_SOURCE checking

src/whack/whack.c

@@ -1868,7 +1868,7 @@ main(int argc, char **argv)
 		    }
 
 		    le++;	/* include NL in line */
-		    write(1, ls, le - ls);
+		    ignore_result(write(1, ls, le - ls));
 
 		    /* figure out prefix number
 		     * and how it should affect our exit status