Add virtual destructor.

diff --git a/include/hardware_legacy/AudioHardwareInterface.h b/include/hardware_legacy/AudioHardwareInterface.h
index 730e5a9..8d37e4f 100644 (file)
--- a/include/hardware_legacy/AudioHardwareInterface.h
+++ b/include/hardware_legacy/AudioHardwareInterface.h
@@ -150,6 +150,8 @@ public:
 class AudioHardwareInterface
 {
 public:
+    virtual ~AudioHardwareInterface() {}
+
     /**
      * check to see if the audio hardware interface has been initialized.
      * return status based on values defined in include/utils/Errors.h