build: fix some warnings

Fix a couple of warnings:

-Werror=unused-parameter
-Werror=non-virtual-dtor

so we can use meson's warning_level=3 and -Werror without build
failures.

Change-Id: Id3c15c2fee70799bee98a8d2890c33ab5ebfd563
Signed-off-by: Brad Bishop <bradleyb@fuzziesquirrel.com>
diff --git a/power-sequencer/pgood_monitor.cpp b/power-sequencer/pgood_monitor.cpp
index 98c3faa..fc593f0 100644
--- a/power-sequencer/pgood_monitor.cpp
+++ b/power-sequencer/pgood_monitor.cpp
@@ -95,7 +95,7 @@
         bus,
         sdbusplus::bus::match::rules::propertiesChanged(POWER_OBJ_PATH,
                                                         POWER_INTERFACE),
-        [this](auto& msg) { this->propertyChanged(); });
+        [this](auto&) { this->propertyChanged(); });
 }
 
 int PGOODMonitor::run()