Use unique_ptr for httpRPCTimerInterface (HTTPRPCTimerInterface)

src/httprpc.cpp

@@ -62,7 +62,7 @@ private:
 /* Pre-base64-encoded authentication token */
 static std::string strRPCUserColonPass;
 /* Stored RPC timer interface (for unregistration) */
-static HTTPRPCTimerInterface* httpRPCTimerInterface = nullptr;
+static std::unique_ptr<HTTPRPCTimerInterface> httpRPCTimerInterface;
 
 static void JSONErrorReply(HTTPRequest* req, const UniValue& objError, const UniValue& id)
 {
@@ -238,8 +238,8 @@ bool StartHTTPRPC()
     RegisterHTTPHandler("/wallet/", false, HTTPReq_JSONRPC);
 #endif
     assert(EventBase());
-    httpRPCTimerInterface = new HTTPRPCTimerInterface(EventBase());
-    RPCSetTimerInterface(httpRPCTimerInterface);
+    httpRPCTimerInterface = std::unique_ptr<HTTPRPCTimerInterface>(new HTTPRPCTimerInterface(EventBase()));
+    RPCSetTimerInterface(httpRPCTimerInterface.get());
     return true;
 }
 
@@ -253,8 +253,7 @@ void StopHTTPRPC()
     LogPrint(BCLog::RPC, "Stopping HTTP RPC server\n");
     UnregisterHTTPHandler("/", true);
     if (httpRPCTimerInterface) {
-        RPCUnsetTimerInterface(httpRPCTimerInterface);
-        delete httpRPCTimerInterface;
-        httpRPCTimerInterface = nullptr;
+        RPCUnsetTimerInterface(httpRPCTimerInterface.get());
+        httpRPCTimerInterface.reset();
     }
 }