Fix error when restart ibus.

gtk2/ibusimclient.c

@@ -275,9 +275,10 @@ _ibus_im_client_ibus_open (IBusIMClient *client)
 
     GList *p;
     for (p = priv->contexts; p != NULL; p = g_list_next (p)) {
-        IBusIMContext *ctx = IBUS_IM_CONTEXT (p->data);
+        IBusIMContext *context = IBUS_IM_CONTEXT (p->data);
         const gchar *ic = _ibus_im_client_create_input_context (client);
-        ibus_im_context_set_ic (ctx, ic);
+        g_hash_table_insert (priv->ic_table, g_strdup (ic), context);
+        ibus_im_context_set_ic (context, ic);
     }
 
 }

gtk2/ibusimcontext.c

@@ -407,7 +407,12 @@ ibus_im_context_set_ic (IBusIMContext *context, const gchar *ic)
 {
     IBusIMContextPrivate *priv = context->priv;
     if (priv->ic) g_free (priv->ic);
+
     priv->ic = g_strdup (ic);
+
+    if (priv->ic == NULL) {
+        priv->enable = FALSE;
+    }
 }
 
 void