cppcheck: silence known condition warning svx xmlexport

Change-Id: If2dcb406d7bd1be8f5552ba75b6cabdbb6c97cb5
Reviewed-on: https://gerrit.libreoffice.org/24208Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: jan iversen <jani@documentfoundation.org>

svx/source/xml/xmlexport.cxx

@@ -150,7 +150,7 @@ bool SvxDrawingLayerImport( SdrModel* pModel, const uno::Reference<io::XInputStr
 
 bool SvxDrawingLayerImport( SdrModel* pModel, const uno::Reference<io::XInputStream>& xInputStream, const Reference< lang::XComponent >& xComponent, const char* pImportService  )
 {
-    sal_uInt32  nRet = 0;
+    bool bRet = true;
 
     Reference< document::XGraphicObjectResolver > xGraphicResolver;
     SvXMLGraphicHelper *pGraphicHelper = nullptr;
@@ -188,10 +188,6 @@ bool SvxDrawingLayerImport( SdrModel* pModel, const uno::Reference<io::XInputStr
             xObjectResolver = pObjectHelper;
         }
 
-
-        if( 0 == nRet )
-        {
-
         // parse
         // prepare ParserInputSrouce
         xml::sax::InputSource aParserInput;
@@ -210,7 +206,7 @@ bool SvxDrawingLayerImport( SdrModel* pModel, const uno::Reference<io::XInputStr
         Reference< xml::sax::XDocumentHandler > xFilter( xContext->getServiceManager()->createInstanceWithArgumentsAndContext( OUString::createFromAscii( pImportService ), aFilterArgs, xContext), UNO_QUERY );
         DBG_ASSERT( xFilter.is(), "Can't instantiate filter component." );
 
-            nRet = 1;
+        bRet = false;
         if( xParser.is() && xFilter.is() )
         {
             // connect parser and filter
@@ -223,8 +219,7 @@ bool SvxDrawingLayerImport( SdrModel* pModel, const uno::Reference<io::XInputStr
             // finally, parser the stream
             xParser->parseStream( aParserInput );
 
-                nRet = 0;
-            }
+            bRet = true;
         }
     }
     catch( uno::Exception& )
@@ -243,7 +238,7 @@ bool SvxDrawingLayerImport( SdrModel* pModel, const uno::Reference<io::XInputStr
     if ( xTargetModel.is() )
         xTargetModel->unlockControllers();
 
-    return nRet == 0;
+    return bRet;
 }
 
 bool SvxDrawingLayerImport( SdrModel* pModel, const uno::Reference<io::XInputStream>& xInputStream )