Resolve Meson issues

This commit includes fixes in the repo:

1. Errors that meson identified
2. Formatting changes

Signed-off-by: Ratan Gupta <ratankgupta31@gmail.com>
Change-Id: I4f57abb2236205fe6fc04292a00a270c816ba965
diff --git a/mainapp.cpp b/mainapp.cpp
index e08da61..e8a1f00 100644
--- a/mainapp.cpp
+++ b/mainapp.cpp
@@ -22,7 +22,7 @@
 // D-Bus root for user manager
 constexpr auto USER_MANAGER_ROOT = "/xyz/openbmc_project/user";
 
-int main(int argc, char** argv)
+int main(int /*argc*/, char** /*argv*/)
 {
     auto bus = sdbusplus::bus::new_default();
     sdbusplus::server::manager::manager objManager(bus, USER_MANAGER_ROOT);