coverity#1371220 Missing move assignment operator

Change-Id: Ie2947ea621da7ffc6c9530f007e1acdd4efb50cb
Reviewed-on: https://gerrit.libreoffice.org/32650Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Caolán McNamara <caolanm@redhat.com>
Tested-by: Caolán McNamara <caolanm@redhat.com>

include/svl/svdde.hxx

@@ -65,9 +65,10 @@ class SVL_DLLPUBLIC DdeData
 
 public:
                     DdeData();
-                    DdeData( SAL_UNUSED_PARAMETER const void*, SAL_UNUSED_PARAMETER long, SAL_UNUSED_PARAMETER SotClipboardFormatId = SotClipboardFormatId::STRING );
-                    DdeData( SAL_UNUSED_PARAMETER const OUString& );
-                    DdeData( const DdeData& );
+                    DdeData(SAL_UNUSED_PARAMETER const void*, SAL_UNUSED_PARAMETER long, SAL_UNUSED_PARAMETER SotClipboardFormatId = SotClipboardFormatId::STRING);
+                    DdeData(SAL_UNUSED_PARAMETER const OUString&);
+                    DdeData(const DdeData&);
+                    DdeData(DdeData&&);
                     ~DdeData();
 
     void const *    getData() const;
@@ -75,7 +76,8 @@ public:
 
     SotClipboardFormatId GetFormat() const;
 
-    DdeData&        operator = ( const DdeData& );
+    DdeData&        operator=(const DdeData&);
+    DdeData&        operator=(DdeData&&);
 
     static sal_uLong GetExternalFormat(SotClipboardFormatId nFmt);
     static SotClipboardFormatId GetInternalFormat(sal_uLong nFmt);

svl/source/svdde/ddedata.cxx

@@ -57,7 +57,7 @@ DdeData::DdeData( const OUString& s )
     xImp->nFmt = SotClipboardFormatId::STRING;
 }
 
-DdeData::DdeData( const DdeData& rData )
+DdeData::DdeData(const DdeData& rData)
 {
     xImp.reset(new DdeDataImp);
     xImp->hData = rData.xImp->hData;
@@ -67,6 +67,11 @@ DdeData::DdeData( const DdeData& rData )
     Lock();
 }
 
+DdeData::DdeData(DdeData&& rData)
+    : xImp(std::move(rData.xImp))
+{
+}
+
 DdeData::~DdeData()
 {
     if (xImp && xImp->hData)
@@ -99,7 +104,7 @@ long DdeData::getSize() const
     return xImp->nData;
 }
 
-DdeData& DdeData::operator = ( const DdeData& rData )
+DdeData& DdeData::operator=(const DdeData& rData)
 {
     if ( &rData != this )
     {
@@ -110,6 +115,12 @@ DdeData& DdeData::operator = ( const DdeData& rData )
     return *this;
 }
 
+DdeData& DdeData::operator=(DdeData&& rData)
+{
+    xImp = std::move(rData.xImp);
+    return *this;
+}
+
 sal_uLong DdeData::GetExternalFormat(SotClipboardFormatId nFmt)
 {
     switch( nFmt )

svl/unx/source/svdde/ddedummy.cxx

@@ -32,7 +32,11 @@ DdeData::DdeData( const OUString& )
 {
 }
 
-DdeData::DdeData( const DdeData& )
+DdeData::DdeData(const DdeData&)
+{
+}
+
+DdeData::DdeData(DdeData&&)
 {
 }
 
@@ -53,7 +57,12 @@ SotClipboardFormatId DdeData::GetFormat() const
     return SotClipboardFormatId::NONE;
 }
 
-DdeData& DdeData::operator = ( const DdeData& )
+DdeData& DdeData::operator=(const DdeData&)
+{
+    return *this;
+}
+
+DdeData& DdeData::operator=(DdeData&&)
 {
     return *this;
 }