[glib/wip/baedert/gparam: 5/6] gresource: Avoid work for NULL errors

[Timm Bäder <baedert src gnome org>]

commit 105e44beb573fb1513625d6edb3a740c2726a4ae
Author: Timm Bäder <mail baedert org>
Date:   Thu Dec 31 12:58:43 2020 +0100

    gresource: Avoid work for NULL errors
    
    Don't go through gettext if the GError** passed is NULL anyway.

 gio/gresource.c | 21 ++++++++++++---------
 1 file changed, 12 insertions(+), 9 deletions(-)
---
diff --git a/gio/gresource.c b/gio/gresource.c
index b495d12ac..4c9652a94 100644
--- a/gio/gresource.c
+++ b/gio/gresource.c
@@ -929,9 +929,10 @@ g_resource_enumerate_children (GResource             *resource,
 
   if (*path == 0)
     {
-      g_set_error (error, G_RESOURCE_ERROR, G_RESOURCE_ERROR_NOT_FOUND,
-                   _("The resource at “%s” does not exist"),
-                   path);
+      if (error)
+        g_set_error (error, G_RESOURCE_ERROR, G_RESOURCE_ERROR_NOT_FOUND,
+                     _("The resource at “%s” does not exist"),
+                     path);
       return NULL;
     }
 
@@ -968,9 +969,10 @@ g_resource_enumerate_children (GResource             *resource,
 
   if (children == NULL)
     {
-      g_set_error (error, G_RESOURCE_ERROR, G_RESOURCE_ERROR_NOT_FOUND,
-                   _("The resource at “%s” does not exist"),
-                   path);
+      if (error)
+        g_set_error (error, G_RESOURCE_ERROR, G_RESOURCE_ERROR_NOT_FOUND,
+                     _("The resource at “%s” does not exist"),
+                     path);
       return NULL;
     }
 
@@ -1237,9 +1239,10 @@ g_resources_enumerate_children (const gchar           *path,
 
   if (hash == NULL)
     {
-      g_set_error (error, G_RESOURCE_ERROR, G_RESOURCE_ERROR_NOT_FOUND,
-                   _("The resource at “%s” does not exist"),
-                   path);
+      if (error)
+        g_set_error (error, G_RESOURCE_ERROR, G_RESOURCE_ERROR_NOT_FOUND,
+                     _("The resource at “%s” does not exist"),
+                     path);
       return NULL;
     }
   else