discover: do not use uninitialized variables.
discover: do not use uninitialized variables.

Change-Id: Ic38c70fddc1d93649c9eb081e093f85f605157f2

otcshare/pulseaudio-module-murphy-ivi,otcshare/pulseaudio-module-murphy-ivi,otcshare/pulseaudio-module-murphy-ivi,otcshare/pulseaudio-module-murphy-ivi