[LyX/master] Fix a shortcut conflict (#9820)

[Scott Kostyshak]

commit d264b3d8fb0fde63a67d21ed8a4c80190379abde
Author: Scott Kostyshak <skost...@lyx.org>
Date:   Tue Nov 17 00:24:19 2015 -0500

    Fix a shortcut conflict (#9820)
    
    'o' is now taken by the new Pandoc export to "MS Word Office".

diff --git a/lib/ui/stdmenus.inc b/lib/ui/stdmenus.inc
index 905f63f..48a7719 100644
--- a/lib/ui/stdmenus.inc
+++ b/lib/ui/stdmenus.inc
@@ -90,7 +90,7 @@ Menuset
        Menu "file_export"
                Item "Export As...|s" "buffer-export-as"
                ExportFormats
-               Item "More Formats & Options...|O" "buffer-export custom"
+               Item "More Formats & Options...|r" "buffer-export custom"
        End
 
 #