gitweb: fix 'ctags' feature check and others

gitweb_check_feature() function is to retrieve the configuration parameter
list and calling it in the scalar context does not give its first element
that tells if the feature is enabled.  This fixes all the existing callers
to call the function correctly in the list context.

Signed-off-by: Junio C Hamano <gitster@pobox.com>

gitweb/gitweb.perl

@@ -3914,7 +3914,7 @@ sub fill_project_list_info {
 	my ($projlist, $check_forks) = @_;
 	my @projects;
 
-	my $show_ctags = gitweb_check_feature('ctags');
+	my ($show_ctags) = gitweb_check_feature('ctags');
  PROJECT:
 	foreach my $pr (@$projlist) {
 		my (@activity) = git_get_last_activity($pr->{'path'});
@@ -3988,7 +3988,7 @@ sub git_project_list_body {
 		@projects = sort {$a->{$oi->{'key'}} <=> $b->{$oi->{'key'}}} @projects;
 	}
 
-	my $show_ctags = gitweb_check_feature('ctags');
+	my ($show_ctags) = gitweb_check_feature('ctags');
 	if ($show_ctags) {
 		my %ctags;
 		foreach my $p (@projects) {
@@ -4457,7 +4457,7 @@ sub git_summary {
 	}
 
 	# Tag cloud
-	my $show_ctags = (gitweb_check_feature('ctags'))[0];
+	my ($show_ctags) = gitweb_check_feature('ctags');
 	if ($show_ctags) {
 		my $ctags = git_get_project_ctags($project);
 		my $cloud = git_populate_project_tagcloud($ctags);
@@ -4559,7 +4559,7 @@ sub git_blame {
 	my $fd;
 	my $ftype;
 
-	gitweb_check_feature('blame')
+	gitweb_check_feature('blame')[0]
 	    or die_error(403, "Blame view not allowed");
 
 	die_error(400, "No file name given") unless $file_name;
@@ -5610,7 +5610,7 @@ sub git_history {
 }
 
 sub git_search {
-	gitweb_check_feature('search') or die_error(403, "Search is disabled");
+	gitweb_check_feature('search')[0] or die_error(403, "Search is disabled");
 	if (!defined $searchtext) {
 		die_error(400, "Text field is empty");
 	}
@@ -5629,11 +5629,11 @@ sub git_search {
 	if ($searchtype eq 'pickaxe') {
 		# pickaxe may take all resources of your box and run for several minutes
 		# with every query - so decide by yourself how public you make this feature
-		gitweb_check_feature('pickaxe')
+		gitweb_check_feature('pickaxe')[0]
 		    or die_error(403, "Pickaxe is disabled");
 	}
 	if ($searchtype eq 'grep') {
-		gitweb_check_feature('grep')
+		gitweb_check_feature('grep')[0]
 		    or die_error(403, "Grep is disabled");
 	}