genesys: Fix memory leaks in global data

backend/genesys_low.cc

@@ -2475,7 +2475,7 @@ void run_functions_at_backend_exit()
     {
         (*it)();
     }
-    s_functions_run_at_backend_exit.release();
+    s_functions_run_at_backend_exit.reset();
 }
 
 void debug_dump(unsigned level, const Genesys_Settings& settings)

backend/genesys_low.h

@@ -717,7 +717,7 @@ public:
 
     void deinit()
     {
-        ptr_.release();
+        ptr_.reset();
     }
 
     const T* operator->() const { return ptr_.get(); }