[evolution/wip/webkit2] Fix few memory leaks from webkit_dom_element_get_attribute() calls

[Tomas Popela <tpopela src gnome org>]

commit b4c5b30cd1a078502c228fdf37f0450b76453581
Author: Tomas Popela <tpopela redhat com>
Date:   Tue May 12 13:29:21 2015 +0200

    Fix few memory leaks from webkit_dom_element_get_attribute() calls

 web-extensions/e-html-editor-view-dom-functions.c |   12 +++++++++---
 1 files changed, 9 insertions(+), 3 deletions(-)
---
diff --git a/web-extensions/e-html-editor-view-dom-functions.c 
b/web-extensions/e-html-editor-view-dom-functions.c
index dbbc229..caca0da 100644
--- a/web-extensions/e-html-editor-view-dom-functions.c
+++ b/web-extensions/e-html-editor-view-dom-functions.c
@@ -414,7 +414,7 @@ dom_force_spell_check (WebKitDOMDocument *document,
 gboolean
 dom_node_is_citation_node (WebKitDOMNode *node)
 {
-       char *value;
+       gchar *value;
 
        if (!WEBKIT_DOM_IS_HTML_QUOTE_ELEMENT (node))
                return FALSE;
@@ -6493,7 +6493,7 @@ set_base64_to_element_attribute (GHashTable *inline_images,
 
        attribute_value = webkit_dom_element_get_attribute (element, attribute);
 
-       if ((base64_src = g_hash_table_lookup (inline_images, attribute_value)) != NULL) {
+       if (attribute_value && (base64_src = g_hash_table_lookup (inline_images, attribute_value)) != NULL) {
                const gchar *base64_data = strstr (base64_src, ";") + 1;
                gchar *name;
                glong name_length;
@@ -6509,6 +6509,7 @@ set_base64_to_element_attribute (GHashTable *inline_images,
 
                g_free (name);
        }
+       g_free (attribute_value);
 }
 
 static void
@@ -6590,6 +6591,7 @@ dom_process_content_after_load (WebKitDOMDocument *document,
 {
        WebKitDOMHTMLElement *body;
        WebKitDOMDOMWindow *dom_window;
+       gchar *data_evo_draft;
 
        /* Don't use CSS when possible to preserve compatibility with older
         * versions of Evolution or other MUAs */
@@ -6620,13 +6622,16 @@ dom_process_content_after_load (WebKitDOMDocument *document,
        move_elements_to_body (document);
        repair_gmail_blockquotes (document);
 
-       if (webkit_dom_element_get_attribute (WEBKIT_DOM_ELEMENT (body), "data-evo-draft")) {
+       data_evo_draft = webkit_dom_element_get_attribute (WEBKIT_DOM_ELEMENT (body), "data-evo-draft");
+       if (data_evo_draft) {
                /* Restore the selection how it was when the draft was saved */
                dom_move_caret_into_element (document, WEBKIT_DOM_ELEMENT (body), FALSE);
                dom_selection_restore (document);
                dom_remove_embed_style_sheet (document);
        }
 
+       g_free (data_evo_draft);
+
        /* The composer body could be empty in some case (loading an empty string
         * or empty HTML. In that case create the initial paragraph. */
        if (!webkit_dom_node_get_first_child (WEBKIT_DOM_NODE (body))) {
@@ -7548,6 +7553,7 @@ rename_attribute (WebKitDOMElement *element,
        if (value)
                webkit_dom_element_set_attribute (element, to, value, NULL);
        webkit_dom_element_remove_attribute (element, from);
+       g_free (value);
 }
 
 static void