sw: un-break DOCX formula export

(regression from 1dac99e7)

Change-Id: Iffe3ec6c28f62b78a2b223144bfaad383d272802

sw/qa/extras/ooxmlexport/ooxmlexport3.cxx

@@ -984,6 +984,9 @@ DECLARE_OOXMLEXPORT_TEST(testFileOpenInputOutputError,"floatingtbl_with_formula.
      if (!pXmlDoc)
          return;
       assertXPath(pXmlDoc, "/w:document/w:body/w:p[1]/w:pPr/w:pStyle", "val", "Normal");
+
+    // let's also assert that the formula was exported properly
+    assertXPathContent(pXmlDoc, "//wps:txbx/w:txbxContent/w:tbl/w:tr/w:tc[2]/w:p/m:oMath/m:sSubSup/m:e/m:r/m:t", OUString::fromUtf8("\xcf\x83"));
 }
 
 #endif

sw/source/filter/ww8/docxattributeoutput.cxx

@@ -127,6 +127,7 @@
 #include <com/sun/star/drawing/ShadingPattern.hpp>
 #include <com/sun/star/text/GraphicCrop.hpp>
 #include <com/sun/star/drawing/LineStyle.hpp>
+#include <com/sun/star/embed/EmbedStates.hpp>
 
 #include <algorithm>
 
@@ -4521,6 +4522,10 @@ bool DocxAttributeOutput::WriteOLEMath( const SdrObject*, const SwOLENode& rOLEN
 void DocxAttributeOutput::WritePostponedMath(const SwOLENode* pPostponedMath)
 {
     uno::Reference < embed::XEmbeddedObject > xObj(const_cast<SwOLENode*>(pPostponedMath)->GetOLEObj().GetOleRef());
+    if (embed::EmbedStates::LOADED == xObj->getCurrentState())
+    {   // must be running so there is a Component
+        xObj->changeState(embed::EmbedStates::RUNNING);
+    }
     uno::Reference< uno::XInterface > xInterface( xObj->getComponent(), uno::UNO_QUERY );
     if (!xInterface.is())
     {