Fix memory leak in TImer class.

This is not really important since the class is currently not used.

This is coverity issue 23291.

src/support/Timeout.cpp

@@ -158,6 +158,12 @@ Timer::Timer() : d(new Private)
 }
 
 
+Timer::~Timer()
+{
+	delete d;
+}
+
+
 void Timer::restart()
 {
 	time(&d->start_time);

src/support/Timeout.h

@@ -68,8 +68,11 @@ private:
 class Timer
 {
 public:
+	///
 	Timer();
 	///
+	~Timer();
+	///
 	void restart();
 	///
 	int elapsed() const;