tdf#115432 footnote separator position wrong (3rd attempt)

My second attempt in

   commit dedf5e4f9000e271683dea9a0488e1b45b91176c
   "tdf#115432 footnote separator position wrong (2nd attempt)"

managed to lose part of the change because of incorrect rebasing.

Change-Id: I7b18f3e1602c617d1cb414ef0eb2ee456aeb58ee
Reviewed-on: https://gerrit.libreoffice.org/50901Reviewed-by: Michael Stahl <mstahl@redhat.com>
Tested-by: Jenkins <ci@libreoffice.org>

xmloff/source/style/XMLFootnoteSeparatorExport.cxx

@@ -75,8 +75,12 @@ void XMLFootnoteSeparatorExport::exportXML(
         switch (rMapper->GetEntryContextId(rState.mnIndex))
         {
         case CTF_PM_FTN_LINE_ADJUST:
-            rState.maValue >>= eLineAdjust;
+        {
+            sal_Int16 nTmp;
+            if (rState.maValue >>= nTmp)
+                eLineAdjust = static_cast<text::HorizontalAdjust>(nTmp);
             break;
+        }
         case CTF_PM_FTN_LINE_COLOR:
             rState.maValue >>= nLineColor;
             break;