[CORE] Fix copying of RefCountClass, RefCountValue (#1081)

Author: xezon

Core/Libraries/Source/WWVegas/WWLib/refcount.h

@@ -123,6 +123,9 @@ class RefCountClass
 		#endif
 	}
 
+	/*
+	** The reference counter value cannot be copied.
+	*/
 	RefCountClass(const RefCountClass & ) : 
 		NumRefs(1)		
 		#ifndef NDEBUG
@@ -135,6 +138,8 @@ class RefCountClass
 		#endif
 	}
 
+	RefCountClass& operator=(const RefCountClass&) { return *this; }
+
 	/*
 	** Add_Ref, call this function if you are going to keep a pointer
 	** to this object.
@@ -280,6 +285,12 @@ class RefCountValue
 		WWASSERT(NumRefs == IntegerType(0));
 	}
 
+	/*
+	** The reference counter value cannot be copied.
+	*/
+	RefCountValue(const RefCountValue&) : NumRefs(1) {}
+	RefCountValue& operator=(const RefCountValue&) { return *this; }
+
 	/*
 	** Add_Ref, call this function if you are going to keep a pointer to this object.
 	*/