Please fix a compiler warning

[ghe0Rghe]

Briefly summarize your issue:

When I compile the device sdk I always have this warning. It will be nice to fix it.

Class 'SpeakerManagerObserverInterface' has virtual method 'onSpeakerSettingsChanged' but non-virtual destructor

What is the expected behavior?

no warnings is shown

What behavior are you observing?

the compiler warning is always shown.

Provide the steps to reproduce the issue, if applicable:

...

Tell us about your environment:

I'm cross compiling for arm using yocto. also I use 1.7.1 version of sdk.

Tell us what hardware you're using:

• Desktop / Laptop
• Raspberry Pi
• [x ] Other - tell us more:

Tell us about your OS (Type & version):

• [ x] Linux
• MacOS
• Raspbian Stretch
• Raspbian Jessy
• Other - tell us more:

[celinval]

Thank you for bringing up this issue. I'll add it to our backlog.