[evolution] Fix return types to match the type of function

[Kjartan Maraas <kmaraas src gnome org>]

commit ab6d59a3828f1b1b170d3827482ad37d89521fdb
Author: Kjartan Maraas <kmaraas gnome org>
Date:   Wed Aug 26 21:51:08 2009 +0200

    Fix return types to match the type of function

 e-util/e-util-labels.c      |    6 +++---
 mail/em-folder-tree-model.c |    6 +++---
 2 files changed, 6 insertions(+), 6 deletions(-)
---
diff --git a/e-util/e-util-labels.c b/e-util/e-util-labels.c
index c4b4edd..eeab09f 100644
--- a/e-util/e-util-labels.c
+++ b/e-util/e-util-labels.c
@@ -539,18 +539,18 @@ e_util_labels_get_color (GSList *labels, const gchar *tag, GdkColor *color)
  * @param labels Cache of labels from call of @ref e_util_labels_parse.
  *        The returned pointer will be taken from this list, so it's alive as long as the list.
  * @param tag Tag of the label of our interest.
- * @return String representation of that label, or NULL, is no such label exists.
+ * @return String representation of that label, or NULL, if no such label exists.
  **/
 const gchar *
 e_util_labels_get_color_str (GSList *labels, const gchar *tag)
 {
 	EUtilLabel *label;
 
-	g_return_val_if_fail (tag != NULL, FALSE);
+	g_return_val_if_fail (tag != NULL, NULL);
 
 	label = find_label (labels, tag);
 	if (!label)
-		return FALSE;
+		return NULL;
 
 	return label->colour;
 }
diff --git a/mail/em-folder-tree-model.c b/mail/em-folder-tree-model.c
index c6e3e5f..0a2ce62 100644
--- a/mail/em-folder-tree-model.c
+++ b/mail/em-folder-tree-model.c
@@ -1308,9 +1308,9 @@ em_folder_tree_model_get_folder_name (EMFolderTreeModel *model, CamelStore *stor
 	GtkTreeIter iter;
 	gchar *name = NULL;
 
-	g_return_val_if_fail (EM_IS_FOLDER_TREE_MODEL (model), FALSE);
-	g_return_val_if_fail (CAMEL_IS_STORE (store), FALSE);
-	g_return_val_if_fail (full != NULL, FALSE);
+	g_return_val_if_fail (EM_IS_FOLDER_TREE_MODEL (model), NULL);
+	g_return_val_if_fail (CAMEL_IS_STORE (store), NULL);
+	g_return_val_if_fail (full != NULL, NULL);
 
 	if (!(si = g_hash_table_lookup (model->store_hash, store))) {
 		u(printf("  can't find store\n"));