tdf#117261 xmloff: ODF import: convert form:connection-resource URL

... to absolute on import.

(regression from fbb3b60c)

Change-Id: I2cd046e44489da86d3d67ff5df6cbad13e8265d0
Reviewed-on: https://gerrit.libreoffice.org/57076Reviewed-by: Michael Stahl <Michael.Stahl@cib.de>
Tested-by: Jenkins

xmloff/source/forms/elementimport.cxx

@@ -2048,7 +2048,7 @@ namespace xmloff
                 )
             {
                 OUString sValue = _xAttrList->getValueByIndex( i );
-
+                sValue = _rImport.GetAbsoluteReference(sValue);
                 INetURLObject aURL(sValue);
                 if ( aURL.GetProtocol() == INetProtocol::File )
                     _xElement->setPropertyValue(PROPERTY_DATASOURCENAME,makeAny(sValue));