cppcheck: variableScope

Change-Id: Id3c2a7f95f4bbcb32203bb4df3610aacfc837a49
Reviewed-on: https://gerrit.libreoffice.org/16189Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Michael Stahl <mstahl@redhat.com>

starmath/source/mathmlexport.cxx

@@ -901,7 +901,7 @@ void SmXMLExport::ExportSubSupScript(const SmNode *pNode, int nLevel)
     const SmNode *pCSup = 0;
     const SmNode *pLSub = 0;
     const SmNode *pLSup = 0;
-    SvXMLElementExport *pThing = 0, *pThing2 = 0;
+    SvXMLElementExport *pThing2 = nullptr;
 
     //if we have prescripts at all then we must use the tensor notation
 
@@ -984,6 +984,7 @@ void SmXMLExport::ExportSubSupScript(const SmNode *pNode, int nLevel)
     }
     else
     {
+        SvXMLElementExport *pThing = nullptr;
         if (NULL != (pSub = pNode->GetSubNode(RSUB+1)) &&
             NULL != (pSup = pNode->GetSubNode(RSUP+1)))
         {