[805] comment update: clarified return vs release to be consistent with the

other comment on this point.

src/lib/server_common/tests/portconfig_unittest.cc

@@ -277,7 +277,7 @@ TEST_F(InstallListenAddresses, brokenRollback) {
         "UDP:127.0.0.1:5288:8",
         NULL
     };
-    // The first set should be returned, as well as all the ones we request now
+    // The first set should be released, as well as all the ones we request now
     const char* released[] = {
         "TCP:127.0.0.1:5288:1",
         "UDP:127.0.0.1:5288:2",