loplugin:returnbyref (Fix TB Linux F19-x86-64)

Change-Id: Ibf00b617a10e2bbe1c1e722c235bb2b75dee79a6
Reviewed-on: https://gerrit.libreoffice.org/18354Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Julien Nabet <serval2412@yahoo.fr>

sc/inc/dbdata.hxx

@@ -54,7 +54,7 @@ class ScDBDataContainerBase
 public:
     ScDBDataContainerBase( ScDocument& rDoc ) : mrDoc(rDoc) {}
     virtual ~ScDBDataContainerBase() {}
-    ScDocument* GetDocument() const;
+    ScDocument& GetDocument() const;
     ScRangeList& GetDirtyTableColumnNames();
 
 protected:

sc/source/core/tool/dbdata.cxx

@@ -654,9 +654,9 @@ void ScDBData::StartTableColumnNamesListener()
 {
     if (mpContainer && bHasHeader)
     {
-        ScDocument* pDoc = mpContainer->GetDocument();
-        if (!pDoc->IsClipOrUndo())
-            pDoc->StartListeningArea( GetHeaderArea(), false, this);
+        ScDocument& pDoc = mpContainer->GetDocument();
+        if (!pDoc.IsClipOrUndo())
+            pDoc.StartListeningArea( GetHeaderArea(), false, this);
     }
 }
 
@@ -1017,9 +1017,9 @@ public:
 
 }
 
-ScDocument* ScDBDataContainerBase::GetDocument() const
+ScDocument& ScDBDataContainerBase::GetDocument() const
 {
-    return &mrDoc;
+    return mrDoc;
 }
 
 ScRangeList& ScDBDataContainerBase::GetDirtyTableColumnNames()