IVGCVSW-3400 Add missing virtual destructors

 * Added missing virtual destructors to recently added profiling
   interface classes

Change-Id: Id2c4b3bb22ef233b26723d3e578477c59018fbda
Signed-off-by: Matteo Martincigh <matteo.martincigh@arm.com>
diff --git a/src/profiling/IProfilingConnection.hpp b/src/profiling/IProfilingConnection.hpp
index c8387f2..160a4fa 100644
--- a/src/profiling/IProfilingConnection.hpp
+++ b/src/profiling/IProfilingConnection.hpp
@@ -18,6 +18,8 @@
 class IProfilingConnection
 {
 public:
+    virtual ~IProfilingConnection() {}
+
     virtual bool IsOpen() = 0;
 
     virtual void Close() =  0;