Fixed bug EXT-5726 (Macintosh shortcut for "Nearby Chat" menu item is incorrect)

Submitting on behalf of Eugene Mutavchi.

--HG--
branch : product-engine

indra/newview/skins/default/xui/en/menu_viewer.xml

@@ -177,7 +177,8 @@
          label="Nearby Chat"
          layout="topleft"
          name="Nearby Chat"
-         shortcut="control|H">
+         shortcut="control|H"
+         use_mac_ctrl="true">
             <menu_item_check.on_check
              function="Floater.Visible"
              parameter="nearby_chat" />