remove delete calls (#906)

src/core/common/new.hpp

@@ -39,7 +39,4 @@
 
 inline void *operator new(size_t, void *p) throw() { return p; }
 
-void OT_CDECL operator delete(void *, size_t) throw();
-void OT_CDECL operator delete(void *) throw();
-
 #endif  // NEW_HPP_

src/core/meshcop/commissioner.cpp

@@ -107,6 +107,8 @@ ThreadError Commissioner::Stop(void)
 
     mTimer.Stop();
 
+    mNetif.GetDtls().Stop();
+
     SendKeepAlive();
 
 exit:

src/core/meshcop/dtls.cpp

@@ -57,14 +57,6 @@ Dtls::Dtls(ThreadNetif &aNetif):
     mProvisioningUrl.Init();
 }
 
-Dtls::~Dtls(void)
-{
-    if (mStarted)
-    {
-        Close();
-    }
-}
-
 ThreadError Dtls::Start(bool aClient, ReceiveHandler aReceiveHandler, SendHandler aSendHandler, void *aContext)
 {
     static const int ciphersuites[2] = {0xC0FF, 0}; // EC-JPAKE cipher suite
@@ -136,12 +128,15 @@ ThreadError Dtls::Stop(void)
 
 void Dtls::Close(void)
 {
-    mStarted = false;
-    mbedtls_ssl_free(&mSsl);
-    mbedtls_ssl_config_free(&mConf);
-    mbedtls_ctr_drbg_free(&mCtrDrbg);
-    mbedtls_entropy_free(&mEntropy);
-    mbedtls_ssl_cookie_free(&mCookieCtx);
+    if (mStarted)
+    {
+        mStarted = false;
+        mbedtls_ssl_free(&mSsl);
+        mbedtls_ssl_config_free(&mConf);
+        mbedtls_ctr_drbg_free(&mCtrDrbg);
+        mbedtls_entropy_free(&mEntropy);
+        mbedtls_ssl_cookie_free(&mCookieCtx);
+    }
 }
 
 bool Dtls::IsStarted(void)

src/core/meshcop/dtls.hpp

@@ -69,12 +69,6 @@ public:
      */
     Dtls(ThreadNetif &aNetif);
 
-    /**
-     * This destructor cleans up the DTLS object.
-     *
-     */
-    ~Dtls(void);
-
     /**
      * This function pointer is called when data is received from the DTLS session.
      *

src/core/openthread.cpp

@@ -66,9 +66,6 @@ static otDEFINE_ALIGNED_VAR(sInstanceRaw, sizeof(otInstance), uint64_t);
 otInstance *sInstance = NULL;
 #endif
 
-void OT_CDECL operator delete(void *, size_t) throw() { }
-void OT_CDECL operator delete(void *) throw() { }
-
 otInstance::otInstance(void) :
     mReceiveIp6DatagramCallback(NULL),
     mReceiveIp6DatagramCallbackContext(NULL),
@@ -1159,9 +1156,6 @@ void otInstanceFinalize(otInstance *aInstance)
     (void)otThreadStop(aInstance);
     (void)otInterfaceDown(aInstance);
 
-    // Free the otInstance structure
-    delete aInstance;
-
 #ifndef OPENTHREAD_MULTIPLE_INSTANCE
     sInstance = NULL;
 #endif

src/core/thread/thread_netif.cpp

@@ -115,6 +115,11 @@ ThreadError ThreadNetif::Down(void)
     mMeshForwarder.Stop();
     mIp6.RemoveNetif(*this);
     mIsUp = false;
+
+#if OPENTHREAD_ENABLE_DTLS
+    mDtls.Stop();
+#endif
+
     return kThreadError_None;
 }