Add check for 2-argument form of timespecsub (FreeBSD and BSD/OS) and

fix a typo in the gettimeofday check.

sudo_edit.c

@@ -294,7 +294,11 @@ int sudo_edit(argc, argv)
 	     * If mtime and size match but the user spent no measurable
 	     * time in the editor we can't tell if the file was changed.
 	     */
+#ifdef HAVE_TIMESPECSUB2
+	    timespecsub(&ts1, &ts2);
+#else
 	    timespecsub(&ts1, &ts2, &ts2);
+#endif
 	    if (timespecisset(&ts2)) {
 		warningx("%s unchanged", tf[i].ofile);
 		unlink(tf[i].tfile);