Bug 1803765 - Include cubeb's test_logging.cpp in gtests. r=cubeb-reviewers,kinetik

Differential Revision: https://phabricator.services.mozilla.com/D163721

media/libcubeb/gtest/moz.build

@@ -8,6 +8,7 @@ UNIFIED_SOURCES += [
 #  '../test/test_duplex.cpp', # DISABLED: See bug 1314514.
 #  '../test/test_record.cpp', # DISABLED: See bug 1314514.
 #  '../test/test_overload_callback.cpp', # DISABLED: Times out in automation.
+  '../test/test_logging.cpp',
   '../test/test_tone.cpp',
   '../test/test_utils.cpp'
 ]