tdf#43157: convert starmath module away from OSL_ASSERT to assert

Change-Id: I446eb5831dd41edac0752d1c4813a7e711042cd3

starmath/source/wordexportbase.cxx

@@ -161,7 +161,7 @@ void SmWordExportBase::HandleMath(const SmNode* pNode, int nLevel)
     {
     case TDIVIDEBY:
     case TACUTE:
-        OSL_ASSERT(false);
+        assert(false);
         SAL_FALLTHROUGH; // the above are handled elsewhere, e.g. when handling BINHOR
     default:
         HandleText(pNode, nLevel);