copy constructor requires explicit default constructor; refs #28

src/cryptoki.hxx

@@ -573,6 +573,9 @@ namespace cryptoki {
       CK_VERSION hardwareVersion;
       CK_VERSION firmwareVersion;
 
+      SlotInfo() {
+      }
+
       //! Convert C-Structure of Slot Information Into C++
       SlotInfo(const CK_SLOT_INFO& cInfo):
           slotDescription(cInfo.slotDescription),
@@ -603,6 +606,9 @@ namespace cryptoki {
       CK_VERSION firmwareVersion;
       FixString<16> utcTime;
 
+      TokenInfo() {
+      }
+      
       //! Convert C-Structure of Token Information Into C++
       TokenInfo(const CK_TOKEN_INFO& cInfo):
           label(cInfo.label),