coverity#1438870 Big parameter passed by value

Change-Id: If170645fa09ffc41948d1770df65b38d35a3f71e
Reviewed-on: https://gerrit.libreoffice.org/60856
Tested-by: Jenkins
Reviewed-by: Caolán McNamara <caolanm@redhat.com>
Tested-by: Caolán McNamara <caolanm@redhat.com>

sc/source/core/tool/scmatrix.cxx

@@ -2641,7 +2641,7 @@ void ScMatrixImpl::ExecuteOperation(const std::pair<size_t, size_t>& rStartPos,
     WalkElementBlockOperation aFunc(maMat.size().row,
             aDoubleFunc, aBoolFunc, aStringFunc, aEmptyFunc);
     maMat.walk(
-        aFunc,
+        std::move(aFunc),
         MatrixImplType::size_pair_type(rStartPos.first, rStartPos.second),
         MatrixImplType::size_pair_type(rEndPos.first, rEndPos.second));
 }