changes needed for meson build

Fix warnings that the meson build turns into errors.

Tested: builds without warnings.

Change-Id: I66b02c4c616f37d09ceba61c494903acc3d28bd5
Signed-off-by: Vernon Mauery <vernon.mauery@linux.intel.com>
diff --git a/src/sensorcommands.cpp b/src/sensorcommands.cpp
index 4dc170f..95bb491 100644
--- a/src/sensorcommands.cpp
+++ b/src/sensorcommands.cpp
@@ -34,6 +34,7 @@
 #include <array>
 #include <chrono>
 #include <cmath>
+#include <cstdint>
 #include <cstring>
 #include <iostream>
 #include <map>
@@ -91,7 +92,7 @@
     *getSdBus(),
     "type='signal',member='InterfacesAdded',arg0path='/xyz/openbmc_project/"
     "sensors/'",
-    [](sdbusplus::message_t& m) {
+    [](sdbusplus::message_t&) {
     sensorTree.clear();
     sdrLastAdd = std::chrono::duration_cast<std::chrono::seconds>(
                      std::chrono::system_clock::now().time_since_epoch())
@@ -102,7 +103,7 @@
     *getSdBus(),
     "type='signal',member='InterfacesRemoved',arg0path='/xyz/openbmc_project/"
     "sensors/'",
-    [](sdbusplus::message_t& m) {
+    [](sdbusplus::message_t&) {
     sensorTree.clear();
     sdrLastRemove = std::chrono::duration_cast<std::chrono::seconds>(
                         std::chrono::system_clock::now().time_since_epoch())
@@ -601,12 +602,10 @@
     bool lowerCriticalThreshMask, bool lowerNonRecovThreshMask,
     bool upperNonCriticalThreshMask, bool upperCriticalThreshMask,
     bool upperNonRecovThreshMask, uint2_t reserved, uint8_t lowerNonCritical,
-    uint8_t lowerCritical, uint8_t lowerNonRecoverable,
+    uint8_t lowerCritical, [[maybe_unused]] uint8_t lowerNonRecoverable,
     uint8_t upperNonCritical, uint8_t upperCritical,
-    uint8_t upperNonRecoverable)
+    [[maybe_unused]] uint8_t upperNonRecoverable)
 {
-    constexpr uint8_t thresholdMask = 0xFF;
-
     if (sensorNum == reservedSensorNumber)
     {
         return ipmi::responseInvalidFieldRequest();
@@ -1328,7 +1327,7 @@
             "getSensorDataRecord: sensor record mismatch");
         return GENERAL_ERROR;
     }
-    get_sdr::SensorDataFullRecord record = {0};
+    get_sdr::SensorDataFullRecord record = {{}, {}, {}};
 
     get_sdr::header::set_record_id(
         recordID, reinterpret_cast<get_sdr::SensorDataRecordHeader*>(&record));