WaE - Fix C4389: ´==´ : signed/unsigned mismatch

Change-Id: I049ca27a0b69887d7ab82312dd30311ddb2bed63
diff --git a/sw/source/filter/html/htmlftn.cxx b/sw/source/filter/html/htmlftn.cxx
index e0145c3..b8eaa26 100644
--- a/sw/source/filter/html/htmlftn.cxx
+++ b/sw/source/filter/html/htmlftn.cxx
@@ -275,7 +275,7 @@ Writer& OutHTML_SwFormatFootnote( Writer& rWrt, const SfxPoolItem& rHt )
    if( rFormatFootnote.IsEndNote() )
    {
        nPos = rHTMLWrt.pFootEndNotes ? rHTMLWrt.pFootEndNotes->size() : 0;
        OSL_ENSURE( nPos == rHTMLWrt.nFootNote + rHTMLWrt.nEndNote,
        OSL_ENSURE( nPos == static_cast<size_t>(rHTMLWrt.nFootNote + rHTMLWrt.nEndNote),
                "OutHTML_SwFormatFootnote: Position falsch" );
        sClass = OOO_STRING_SVTOOLS_HTML_sdendnote_anc;
        sFootnoteName = OOO_STRING_SVTOOLS_HTML_sdendnote + OUString::number( (sal_Int32)(++rHTMLWrt.nEndNote) );