Added copy constructor to RegistryKey.

rejistry++/src/RegistryKey.cpp

@@ -35,6 +35,13 @@ namespace Rejistry {
         _nk = new NKRecord(*(rk._nk));
     }
 
+    RegistryKey& RegistryKey::operator=(const RegistryKey & rk) {
+        if (this != &rk) {
+            _nk = new NKRecord(*(rk._nk));
+        }
+        return *this;
+    }
+
     RegistryKey::~RegistryKey() {
         if (_nk != NULL) {
             delete _nk;

rejistry++/src/RegistryKey.h

@@ -47,6 +47,7 @@ namespace Rejistry {
 
         RegistryKey(NKRecord* nk) { _nk = nk; }
         RegistryKey(const RegistryKey& );
+        RegistryKey& operator=(const RegistryKey &);
 
         virtual ~RegistryKey();
 
@@ -97,7 +98,6 @@ namespace Rejistry {
 
     private:
         RegistryKey();
-        RegistryKey& operator=(const RegistryKey &);
 
         NKRecord * _nk;
     };