Merge pull request #193 from lioncash/explicit

CToken: Make operator bool explicit

Runtime/CToken.hpp

@@ -74,7 +74,7 @@ class CToken {
 
 public:
   /* Added to test for non-null state */
-  operator bool() const { return x0_objRef != nullptr; }
+  explicit operator bool() const { return x0_objRef != nullptr; }
   void Unlock();
   void Lock();
   bool IsLocked() const { return x4_lockHeld; }