SwHTMLParser: avoid a spurious ~SwindexReg assert

The pPam that is passed to SwHTMLParser would be reinitialized by
SwReader::Read anyway.  Can be reproduced with bugdoc from fdo#65935.

Change-Id: I3b7dcc9c83d9d2eac05ee6ec38909dea7350d245

sw/source/filter/html/swhtml.cxx

@@ -237,7 +237,7 @@ sal_uLong HTMLReader::Read( SwDoc &rDoc, const String& rBaseURL, SwPaM &rPam, co
 
 
 
-SwHTMLParser::SwHTMLParser( SwDoc* pD, const SwPaM& rCrsr, SvStream& rIn,
+SwHTMLParser::SwHTMLParser( SwDoc* pD, SwPaM& rCrsr, SvStream& rIn,
                             const String& rPath,
                             const String& rBaseURL,
                             int bReadNewDoc,
@@ -305,7 +305,8 @@ SwHTMLParser::SwHTMLParser( SwDoc* pD, const SwPaM& rCrsr, SvStream& rIn,
     eScriptLang = HTML_SL_UNKNOWN;
     bAnyStarBasic = sal_True;
 
-    pPam = new SwPaM( *rCrsr.GetPoint() );
+    rCrsr.DeleteMark();
+    pPam = &rCrsr; // re-use existing cursor: avoids spurious ~SwIndexReg assert
     memset( &aAttrTab, 0, sizeof( _HTMLAttrTable ));
 
     // Die Font-Groessen 1-7 aus der INI-Datei lesen
@@ -453,7 +454,6 @@ SwHTMLParser::~SwHTMLParser()
         aSetAttrTab.clear();
     }
 
-    delete pPam;
     delete pCSS1Parser;
     delete pNumRuleInfo;
     DeleteFormImpl();

sw/source/filter/html/swhtml.hxx

@@ -894,7 +894,7 @@ protected:
 
 public:
 
-    SwHTMLParser( SwDoc* pD, const SwPaM& rCrsr, SvStream& rIn,
+    SwHTMLParser( SwDoc* pD, SwPaM & rCrsr, SvStream& rIn,
                     const String& rFileName,
                     const String& rBaseURL,
                     int bReadNewDoc = sal_True,