Bug 1743: Keyboard accelerator for "Octal" box on Preferences dialog does not work

https://winscp.net/tracker/1743
(cherry picked from commit 90e8a2d5d40833439c5282f7be79a06f2d206267)

Source commit: 1b884ee89b2e221d3ea570a0f04c09fc072d7626

source/forms/Rights.dfm

@@ -62,6 +62,7 @@ object RightsFrame: TRightsFrame
     Width = 29
     Height = 13
     Caption = 'O&ctal:'
+    FocusControl = OctalEdit
   end
   object OwnerReadCheck: TGrayedCheckBox
     Tag = 256