loplugin:stringconstant: handle OUString+=OUString(literal)

Change-Id: If9324bfb77d5f98ce6f968e0aa095f285ef7583f

writerfilter/source/dmapper/DomainMapperTableHandler.cxx

@@ -844,11 +844,9 @@ CellPropertyValuesSeq_t DomainMapperTableHandler::endTableGetCellProperties(Tabl
                 sal_Int32 nDebugCellProperties = aDebugCellProperties.getLength();
                 for( sal_Int32  nDebugProperty = 0; nDebugProperty < nDebugCellProperties; ++nDebugProperty)
                 {
-                    const OUString sName = aDebugCellProperties[nDebugProperty].Name;
-                    sNames += sName;
-                    sNames += OUString('-');
+                    sNames += aDebugCellProperties[nDebugProperty].Name + "-";
                 }
-                sNames += OUString('\n');
+                sNames += "\n";
             }
             (void)sNames;
         }

writerfilter/source/dmapper/DomainMapper_Impl.cxx

@@ -2672,8 +2672,7 @@ void FieldContext::AppendCommand(const OUString& rPart)
 
         if (bInString)
         {
-            sPart += OUString(' ');
-            sPart += sToken;
+            sPart += " " + sToken;
             if (!bInStringNext)
             {
                 aResult.push_back(sPart);
@@ -3720,8 +3719,7 @@ void DomainMapper_Impl::CloseFieldCommand()
                                 if (aPartIt == aItEnd)
                                     break;
 
-                                sURL += OUString('#');
-                                sURL += *aPartIt;
+                                sURL += "#" + *aPartIt;
                             }
                             else if ( *aPartIt == "\\m" || *aPartIt == "\\n" )
                             {