RTF: use "InsertMode" insead of "IsNewDoc" for consistency

... with other filters.

Change-Id: I563d6f7713d882b834978699c492a43a70e072cd
diff --git a/sw/qa/extras/rtfimport/rtfimport.cxx b/sw/qa/extras/rtfimport/rtfimport.cxx
index 88df7ad..95a3a09 100644
--- a/sw/qa/extras/rtfimport/rtfimport.cxx
+++ b/sw/qa/extras/rtfimport/rtfimport.cxx
@@ -91,8 +91,8 @@ protected:
        SvStream* pStream = utl::UcbStreamHelper::CreateStream(getURLFromSrc("/sw/qa/extras/rtfimport/data/") + aFilename, STREAM_WRITE);
        uno::Reference<io::XStream> xStream(new utl::OStreamWrapper(*pStream));
        aDescriptor[0].Value <<= xStream;
        aDescriptor[1].Name = "IsNewDoc";
        aDescriptor[1].Value <<= sal_False;
        aDescriptor[1].Name = "InsertMode";
        aDescriptor[1].Value <<= sal_True;
        if (xTextRange.is())
        {
            aDescriptor[2].Name = "TextInsertModeRange";
diff --git a/sw/source/filter/rtf/swparrtf.cxx b/sw/source/filter/rtf/swparrtf.cxx
index cfbc915..aad6a8d 100644
--- a/sw/source/filter/rtf/swparrtf.cxx
+++ b/sw/source/filter/rtf/swparrtf.cxx
@@ -87,8 +87,8 @@ sal_uLong SwRTFReader::Read( SwDoc &rDoc, const OUString& /*rBaseURL*/, SwPaM& r
    aDescriptor[0].Name = "InputStream";
    uno::Reference<io::XStream> xStream(new utl::OStreamWrapper(*pStrm));
    aDescriptor[0].Value <<= xStream;
    aDescriptor[1].Name = "IsNewDoc";
    aDescriptor[1].Value <<= sal_False;
    aDescriptor[1].Name = "InsertMode";
    aDescriptor[1].Value <<= sal_True;
    aDescriptor[2].Name = "TextInsertModeRange";
    aDescriptor[2].Value <<= xInsertTextRange;
    sal_uLong ret(0);
diff --git a/writerfilter/source/filter/RtfFilter.cxx b/writerfilter/source/filter/RtfFilter.cxx
index 54bc27b..6093211 100644
--- a/writerfilter/source/filter/RtfFilter.cxx
+++ b/writerfilter/source/filter/RtfFilter.cxx
@@ -75,7 +75,7 @@ sal_Bool RtfFilter::filter( const uno::Sequence< beans::PropertyValue >& aDescri
    {
        MediaDescriptor aMediaDesc( aDescriptor );
        bool bRepairStorage = aMediaDesc.getUnpackedValueOrDefault( "RepairPackage", false );
        bool bIsNewDoc = aMediaDesc.getUnpackedValueOrDefault( "IsNewDoc", true );
        bool bIsNewDoc = !aMediaDesc.getUnpackedValueOrDefault("InsertMode", false);
        uno::Reference<text::XTextRange> xInsertTextRange = aMediaDesc.getUnpackedValueOrDefault( "TextInsertModeRange", uno::Reference<text::XTextRange>());
#ifdef DEBUG_IMPORT
        OUString sURL = aMediaDesc.getUnpackedValueOrDefault( MediaDescriptor::PROP_URL(), OUString() );