fix the 'warning' icon in .ui files

Images in .ui files can be loaded from resources (images.zip).
However, only those images are packed into images.zip, which are
used in traditional .src resources. We need to tweak packimages.pl
one day.

Change-Id: Ic954f2561e66880c7f7ff3ed941ccb28a86d83e1

cui/uiconfig/ui/optsavepage.ui

@@ -496,7 +496,7 @@
                           <object class="GtkImage" id="odfwarning_image">
                             <property name="visible">True</property>
                             <property name="can_focus">False</property>
-                            <property name="pixbuf">svx/res/odfwarning.png</property>
+                            <property name="pixbuf">svx/res/caution_11x16.png</property>
                           </object>
                           <packing>
                             <property name="left_attach">0</property>

xmlsecurity/uiconfig/ui/digitalsignaturesdialog.ui

@@ -310,7 +310,7 @@
                   <object class="GtkImage" id="invalidimg">
                     <property name="can_focus">False</property>
                     <property name="no_show_all">True</property>
-                    <property name="pixbuf">xmlsecurity/res/caution_11x16.png</property>
+                    <property name="pixbuf">svx/res/caution_11x16.png</property>
                   </object>
                   <packing>
                     <property name="left_attach">0</property>
@@ -323,7 +323,7 @@
                   <object class="GtkImage" id="oldsignatureimg">
                     <property name="can_focus">False</property>
                     <property name="no_show_all">True</property>
-                    <property name="pixbuf">xmlsecurity/res/caution_11x16.png</property>
+                    <property name="pixbuf">svx/res/caution_11x16.png</property>
                   </object>
                   <packing>
                     <property name="left_attach">0</property>