fix warnings

Fix a couple warnings so we can use meson warning level 3.  Instances of
the following warnings are found and resolved:

  Wreorder
  Wsign-compare

Change-Id: Ia223b42aa6bf743cfa0e7042cc3d5a18977459be
Signed-off-by: Brad Bishop <bradleyb@fuzziesquirrel.com>
diff --git a/src/MCUTempSensor.cpp b/src/MCUTempSensor.cpp
index 581919c..06376b6 100644
--- a/src/MCUTempSensor.cpp
+++ b/src/MCUTempSensor.cpp
@@ -62,8 +62,8 @@
            std::move(thresholdData), sensorConfiguration,
            "xyz.openbmc_project.Configuration.ExitAirTemp", mcuTempMaxReading,
            mcuTempMinReading),
-    objectServer(objectServer), dbusConnection(conn), waitTimer(io),
-    busId(busId), mcuAddress(mcuAddress), tempReg(tempReg)
+    busId(busId), mcuAddress(mcuAddress), tempReg(tempReg),
+    objectServer(objectServer), dbusConnection(conn), waitTimer(io)
 {
     sensorInterface = objectServer.add_interface(
         "/xyz/openbmc_project/sensors/temperature/" + name,