desktop: can pass by value in LOKTransferable

Change-Id: Iba7c216f28700e8899d76942a4a0a8b77ed3c549
Reviewed-on: https://gerrit.libreoffice.org/71930
Tested-by: Jenkins
Reviewed-by: Miklos Vajna <vmiklos@collabora.com>

desktop/source/lib/lokclipboard.cxx

@@ -32,9 +32,8 @@ LOKTransferable::LOKTransferable(const char* pMimeType, const char* pData, std::
 {
 }
 
-LOKTransferable::LOKTransferable(const OUString& sMimeType,
-                                 const css::uno::Sequence<sal_Int8>& aSequence)
-    : m_aMimeType(sMimeType)
+LOKTransferable::LOKTransferable(OUString sMimeType, const css::uno::Sequence<sal_Int8>& aSequence)
+    : m_aMimeType(std::move(sMimeType))
     , m_aSequence(aSequence)
 {
 }

desktop/source/lib/lokclipboard.hxx

@@ -42,7 +42,7 @@ class LOKTransferable : public cppu::WeakImplHelper<css::datatransfer::XTransfer
 
 public:
     LOKTransferable(const char* pMimeType, const char* pData, std::size_t nSize);
-    LOKTransferable(const OUString& sMimeType, const css::uno::Sequence<sal_Int8>& aSequence);
+    LOKTransferable(OUString sMimeType, const css::uno::Sequence<sal_Int8>& aSequence);
 
     css::uno::Any SAL_CALL getTransferData(const css::datatransfer::DataFlavor& rFlavor) override;