[gtk+] Avoid perl warnings

[Matthias Clasen <matthiasc src gnome org>]

commit 5271ea34d18324a74356e2495823497443e10dc4
Author: Matthias Clasen <mclasen redhat com>
Date:   Fri Feb 1 21:58:34 2013 -0500

    Avoid perl warnings
    
    Apparently, defined is not cool anymore.

 demos/gtk-demo/geninclude.pl.in |   12 ++++++------
 1 files changed, 6 insertions(+), 6 deletions(-)
---
diff --git a/demos/gtk-demo/geninclude.pl.in b/demos/gtk-demo/geninclude.pl.in
index 592aa98..5c9351d 100755
--- a/demos/gtk-demo/geninclude.pl.in
+++ b/demos/gtk-demo/geninclude.pl.in
@@ -41,7 +41,7 @@ foreach $href (@demos) {
 	my $do_next = 0;
 
 	# parent detected
-	if (defined @parents) {
+	if (@parents) {
 	    foreach $foo (@parents) {
 		if ($foo eq $parent_name) {
 		    $do_next = 1;
@@ -55,7 +55,7 @@ foreach $href (@demos) {
 
 	push @parents, $parent_name;
 
-	$tmp = (defined @child_arrays)?($#child_arrays + 1):0;
+	$tmp = (@child_arrays)?($#child_arrays + 1):0;
 	push @child_arrays, "child$tmp";
 
 	push @demos, {"name" => "NULL", "title" => $parent_name, "file" => "NULL",
@@ -63,7 +63,7 @@ foreach $href (@demos) {
     }
 }
 
-if (defined @parents) {
+if (@parents) {
     $i = 0;
     for ($i = 0; $i <= $#parents; $i++) {
 	$first = 1;
@@ -74,7 +74,7 @@ if (defined @parents) {
 	for ($j = 0; $j <= $#demos; $j++) {
 	    $href = $demos[$j];
 	    
-	    if (!defined $demos[$j]) {
+	    if (!$demos[$j]) {
 		next;
 	    }
 	    
@@ -106,7 +106,7 @@ if (defined @parents) {
 } @demos_old;
 
 # sort the child arrays
-if (defined @child_arrays) {
+if (@child_arrays) {
     for ($i = 0; $i <= $#child_arrays; $i++) {
 	@foo_old = @{$child_arrays[$i]};
 
@@ -134,7 +134,7 @@ foreach $href (@demos) {
 	print ", \n";
     }
 
-    if (defined @parents) {
+    if (@parents) {
 	for ($i = 0; $i <= $#parents; $i++) {
 	    if ($parents[$i] eq $href->{title}) {