Put RefData move constructor to cpp file

apps/openmw/mwworld/refdata.cpp

@@ -130,6 +130,9 @@ namespace MWWorld
         {}
     }
 
+    RefData::RefData(RefData&& other) noexcept = default;
+    RefData& RefData::operator=(RefData&& other) noexcept = default;
+
     void RefData::setBaseNode(SceneUtil::PositionAttitudeTransform *base)
     {
         mBaseNode = base;

apps/openmw/mwworld/refdata.hpp

@@ -72,7 +72,7 @@ namespace MWWorld
             /// perform these operations).
 
             RefData (const RefData& refData);
-            RefData (RefData&& other) noexcept = default;
+            RefData (RefData&& other) noexcept;
 
             ~RefData();
 
@@ -81,7 +81,7 @@ namespace MWWorld
             /// perform this operations).
 
             RefData& operator= (const RefData& refData);
-            RefData& operator= (RefData&& other) noexcept = default;
+            RefData& operator= (RefData&& other) noexcept;
 
             /// Return base node (can be a null pointer).
             SceneUtil::PositionAttitudeTransform* getBaseNode();