avoid $_ in a few other for loops

These were probably not currently buggy, but let's avoid bugs being
introduced by the functions called clobbering $_.

IkiWiki/Plugin/autoindex.pm

@@ -97,7 +97,9 @@ sub refresh () { #{{{
 		if ($config{rcs}) {
 			IkiWiki::disable_commit_hook();
 		}
-		genindex($_) foreach @needed;
+		foreach my $page (@needed) {
+			genindex($page);
+		}
 		if ($config{rcs}) {
 			IkiWiki::rcs_commit_staged(
 				gettext("automatic index generation"),

IkiWiki/Plugin/goodstuff.pm

@@ -27,7 +27,9 @@ my @bundle=qw{
 
 sub import { #{{{
 	hook(type => "getsetup", id => "goodstuff", call => \&getsetup);
-	IkiWiki::loadplugin($_) foreach @bundle;
+	foreach my $plugin (@bundle) {
+		IkiWiki::loadplugin($plugin);
+	}
 } # }}}
 
 sub getsetup { #{{{