[meld] resources: Fix some icon use consistency

[Kai Willadsen <kaiw src gnome org>]

commit 3bb8bf79b5375e66d92fb06de360b532e926b636
Author: Kai Willadsen <kai willadsen gmail com>
Date:   Thu Feb 7 07:20:38 2019 +1000

    resources: Fix some icon use consistency

 meld/resources/ui/filediff.ui | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)
---
diff --git a/meld/resources/ui/filediff.ui b/meld/resources/ui/filediff.ui
index f1a395ff..855d5997 100644
--- a/meld/resources/ui/filediff.ui
+++ b/meld/resources/ui/filediff.ui
@@ -34,7 +34,7 @@
               <object class="GtkToolButton" id="file_save_button2">
                 <property name="visible">True</property>
                 <property name="can_focus">True</property>
-                <property name="icon_name">document-save</property>
+                <property name="icon_name">document-save-symbolic</property>
                 <signal name="clicked" handler="on_file_save_button_clicked" swapped="no"/>
               </object>
               <packing>
@@ -97,7 +97,7 @@
               <object class="GtkToggleToolButton" id="readonlytoggle1">
                 <property name="can_focus">False</property>
                 <property name="tooltip_text" translatable="yes">This file can not be written to. You may 
click here to unlock this file and make changes anyway, but these changes must be saved to a new 
file.</property>
-                <property name="icon_name">emblem-readonly</property>
+                <property name="icon_name">changes-prevent-symbolic</property>
                 <signal name="toggled" handler="on_readonly_button_toggled" swapped="no"/>
               </object>
               <packing>
@@ -172,7 +172,7 @@
               <object class="GtkToggleToolButton" id="readonlytoggle0">
                 <property name="can_focus">False</property>
                 <property name="tooltip_text" translatable="yes">This file can not be written to. You may 
click here to unlock this file and make changes anyway, but these changes must be saved to a new 
file.</property>
-                <property name="icon_name">emblem-readonly</property>
+                <property name="icon_name">changes-prevent-symbolic</property>
                 <signal name="toggled" handler="on_readonly_button_toggled" swapped="no"/>
               </object>
               <packing>