-Werror,-Wunused-variable

Change-Id: Ia7fa834e3d9bf8578dcdc667fbe97ce58606704b

sw/source/core/undo/undel.cxx

@@ -789,6 +789,7 @@ void SwUndoDelete::UndoImpl(::sw::UndoRedoContext & rContext)
                 OUString const ins( pTxtNd->InsertText(*pEndStr, aPos.nContent,
                         IDocumentContentOperations::INS_NOHINTEXPAND) );
                 assert(ins.getLength() == pEndStr->Len()); // must succeed
+                (void) ins;
                 // METADATA: restore
                 pTxtNd->RestoreMetadata(m_pMetadataUndoEnd);
             }
@@ -883,6 +884,7 @@ void SwUndoDelete::UndoImpl(::sw::UndoRedoContext & rContext)
                 OUString const ins( pTxtNd->InsertText(*pSttStr, aPos.nContent,
                         IDocumentContentOperations::INS_NOHINTEXPAND) );
                 assert(ins.getLength() == pSttStr->Len()); // must succeed
+                (void) ins;
                 // METADATA: restore
                 pTxtNd->RestoreMetadata(m_pMetadataUndoStart);
             }

sw/source/core/undo/unins.cxx

@@ -730,6 +730,7 @@ void SwUndoReplace::Impl::UndoImpl(::sw::UndoRedoContext & rContext)
     {
         OUString const ins( pNd->InsertText( m_sOld, aIdx ) );
         assert(ins.getLength() == m_sOld.getLength()); // must succeed
+        (void) ins;
     }
 
     if( pHistory )

sw/source/core/undo/unovwr.cxx

@@ -157,6 +157,7 @@ sal_Bool SwUndoOverwrite::CanGrouping( SwDoc* pDoc, SwPosition& rPos,
     OUString const ins( pDelTxtNd->InsertText(OUString(cIns), rPos.nContent,
             IDocumentContentOperations::INS_EMPTYEXPAND) );
     assert(ins.getLength() == 1); // check in SwDoc::Overwrite => cannot fail
+    (void) ins;
     aInsStr.Insert( cIns );
 
     if( !bInsChar )
@@ -210,6 +211,7 @@ void SwUndoOverwrite::UndoImpl(::sw::UndoRedoContext & rContext)
             OUString aTmpStr(aDelStr.GetChar(n));
             OUString const ins( pTxtNd->InsertText(aTmpStr, rIdx) );
             assert(ins.getLength() == 1); // cannot fail
+        (void) ins;
             rIdx -= 2;
             pTxtNd->EraseText( rIdx, 1 );
             rIdx += 2;
@@ -282,6 +284,7 @@ void SwUndoOverwrite::RedoImpl(::sw::UndoRedoContext & rContext)
                 pTxtNd->InsertText( OUString(aInsStr.GetChar(n)), rIdx,
                 IDocumentContentOperations::INS_EMPTYEXPAND) );
         assert(ins.getLength() == 1); // cannot fail
+        (void) ins;
         if( n < aDelStr.Len() )
         {
             rIdx -= 2;