[gtk+] GtkIconTheme: a small optimization

[Matthias Clasen <matthiasc src gnome org>]

commit 5abadc6d950d76ee10793703a193bfb08aae904c
Author: Matthias Clasen <mclasen redhat com>
Date:   Tue May 31 20:29:53 2011 -0400

    GtkIconTheme: a small optimization
    
    John Lindgren points out in bug 650202 that using judicious
    use of g_key_file_has_key() can save some cycles in application
    startup.

 gtk/gtkicontheme.c |   36 ++++++++++++------------------------
 1 files changed, 12 insertions(+), 24 deletions(-)
---
diff --git a/gtk/gtkicontheme.c b/gtk/gtkicontheme.c
index d3471d6..ad55d02 100644
--- a/gtk/gtkicontheme.c
+++ b/gtk/gtkicontheme.c
@@ -2570,32 +2570,20 @@ theme_subdir_load (GtkIconTheme *icon_theme,
       g_free (context_string);
     }
 
-  max_size = g_key_file_get_integer (theme_file, subdir, "MaxSize", &error);
-  if (error)
-    {
-      max_size = size;
-
-      g_error_free (error);
-      error = NULL;
-    }
-
-  min_size = g_key_file_get_integer (theme_file, subdir, "MinSize", &error);
-  if (error)
-    {
-      min_size = size;
+  if (g_key_file_has_key (theme_file, subdir, "MaxSize", NULL))
+    max_size = g_key_file_get_integer (theme_file, subdir, "MaxSize", NULL);
+  else
+    max_size = size;
 
-      g_error_free (error);
-      error = NULL;
-    }
-  
-  threshold = g_key_file_get_integer (theme_file, subdir, "Threshold", &error);
-  if (error)
-    {
-      threshold = 2;
+  if (g_key_file_has_key (theme_file, subdir, "MinSize", NULL))
+    min_size = g_key_file_get_integer (theme_file, subdir, "MinSize", NULL);
+  else
+    min_size = size;
 
-      g_error_free (error);
-      error = NULL;
-    }
+  if (g_key_file_has_key (theme_file, subdir, "Threshold", NULL))
+    threshold = g_key_file_get_integer (theme_file, subdir, "Threshold", NULL);
+  else
+    threshold = 2;
 
   for (d = icon_theme->priv->dir_mtimes; d; d = d->next)
     {