loplugin:stringconstant: Flag more inefficiencies

Change-Id: I7d8b0ab33980726ffb4887b1f19797702d224191

filter/source/graphic/GraphicExportFilter.cxx

@@ -44,10 +44,10 @@ void GraphicExportFilter::gatherProperties( const Sequence<PropertyValue>& rProp
         if ( aProperty.Name == "FilterName" )
         {
             aProperty.Value >>= aInternalFilterName;
-            aInternalFilterName = aInternalFilterName.replaceFirst( OUString( "draw_"    ), OUString() );
-            aInternalFilterName = aInternalFilterName.replaceFirst( OUString( "impress_" ), OUString() );
-            aInternalFilterName = aInternalFilterName.replaceFirst( OUString( "calc_"    ),  OUString() );
-            aInternalFilterName = aInternalFilterName.replaceFirst( OUString( "writer_"  ),  OUString() );
+            aInternalFilterName = aInternalFilterName.replaceFirst("draw_", "");
+            aInternalFilterName = aInternalFilterName.replaceFirst("impress_", "");
+            aInternalFilterName = aInternalFilterName.replaceFirst("calc_", "");
+            aInternalFilterName = aInternalFilterName.replaceFirst("writer_", "");
         }
         else if ( aProperty.Name == "FilterData" )
         {

filter/source/xmlfilteradaptor/XmlFilterAdaptor.cxx

@@ -141,7 +141,7 @@ bool SAL_CALL XmlFilterAdaptor::importImpl( const Sequence< ::com::sun::star::be
             Sequence<com::sun::star::beans::PropertyValue> pValue=xstyleLoader->getStyleLoaderOptions();
 
             //Load the Styles from the Template URL Supplied in the TypeDetection file
-            if(msTemplateName.indexOf(OUString( "file:" ))==-1)
+            if(msTemplateName.indexOf("file:")==-1)
             {
                 SvtPathOptions aOptions;
                 OUString PathString = aOptions.SubstituteVariable(OUString("$(progurl)"));

filter/source/xsltdialog/xmlfilterjar.cxx

@@ -123,7 +123,7 @@ void XMLFilterJarHelper::addFile( Reference< XInterface > xRootFolder, Reference
     {
         OUString aFileURL( rSourceFile );
 
-        if( !aFileURL.matchIgnoreAsciiCase( OUString("file://") ) )
+        if( !aFileURL.matchIgnoreAsciiCase("file://") )
         {
             aFileURL = URIHelper::SmartRel2Abs( INetURLObject(sProgPath), aFileURL, Link<OUString *, bool>(), false );
         }