[evolution] EHTMLEditorSelection - Avoid runtime warning when trying to cast DOMText to DOMElement

[Tomas Popela <tpopela src gnome org>]

commit 5c08e2981273b719503cc2adc740b8e8ed235467
Author: Tomas Popela <tpopela redhat com>
Date:   Mon Jul 21 16:38:53 2014 +0200

    EHTMLEditorSelection - Avoid runtime warning when trying to cast DOMText to DOMElement

 e-util/e-html-editor-selection.c |   16 +++++++++-------
 1 files changed, 9 insertions(+), 7 deletions(-)
---
diff --git a/e-util/e-html-editor-selection.c b/e-util/e-html-editor-selection.c
index 1d7fdf9..0ae1780 100644
--- a/e-util/e-html-editor-selection.c
+++ b/e-util/e-html-editor-selection.c
@@ -1567,11 +1567,15 @@ e_html_editor_selection_get_block_format (EHTMLEditorSelection *selection)
 }
 
 static gboolean
-is_selection_position_node (WebKitDOMElement *element)
+is_selection_position_node (WebKitDOMNode *node)
 {
-       if (!element || !WEBKIT_DOM_IS_ELEMENT (element))
+       WebKitDOMElement *element;
+
+       if (!node || !WEBKIT_DOM_IS_ELEMENT (node))
                return FALSE;
 
+       element = WEBKIT_DOM_ELEMENT (node);
+
        return element_has_id (element, "-x-evo-caret-position") ||
               element_has_id (element, "-x-evo-selection-start-marker") ||
               element_has_id (element, "-x-evo-selection-end-marker");
@@ -5141,7 +5145,7 @@ wrap_lines (EHTMLEditorSelection *selection,
                        }
                        g_free (text_content);
                } else {
-                       if (is_selection_position_node (WEBKIT_DOM_ELEMENT (node))) {
+                       if (is_selection_position_node (node)) {
                                node = webkit_dom_node_get_next_sibling (node);
                                continue;
                        }
@@ -6010,8 +6014,7 @@ e_html_editor_selection_restore (EHTMLEditorSelection *selection)
                selection_start_marker =
                        webkit_dom_node_get_next_sibling (selection_start_marker);
 
-               ok = is_selection_position_node (
-                       WEBKIT_DOM_ELEMENT (selection_start_marker));
+               ok = is_selection_position_node (selection_start_marker);
 
                if (ok) {
                        ok = FALSE;
@@ -6019,8 +6022,7 @@ e_html_editor_selection_restore (EHTMLEditorSelection *selection)
                                selection_end_marker = webkit_dom_node_get_next_sibling (
                                        selection_start_marker);
 
-                               ok = is_selection_position_node (
-                                       WEBKIT_DOM_ELEMENT (selection_end_marker));
+                               ok = is_selection_position_node (selection_end_marker);
                                if (ok) {
                                        remove_node (selection_start_marker);
                                        remove_node (selection_end_marker);