rsyslog-config: fix compile warnings under -Werror

Signed-off-by: Patrick Williams <patrick@stwcx.xyz>
Change-Id: I13081a2f5e98a76cbc708ad1c987ee76e311c6ae
diff --git a/phosphor-rsyslog-config/main.cpp b/phosphor-rsyslog-config/main.cpp
index ea0ca03..3a01e8c 100644
--- a/phosphor-rsyslog-config/main.cpp
+++ b/phosphor-rsyslog-config/main.cpp
@@ -4,7 +4,7 @@
 
 #include <sdbusplus/bus.hpp>
 
-int main(int argc, char* argv[])
+int main(int /*argc*/, char* /*argv*/[])
 {
     auto bus = sdbusplus::bus::new_default();
 
diff --git a/phosphor-rsyslog-config/server-conf.hpp b/phosphor-rsyslog-config/server-conf.hpp
index 8e1b2cb..979f845 100644
--- a/phosphor-rsyslog-config/server-conf.hpp
+++ b/phosphor-rsyslog-config/server-conf.hpp
@@ -106,7 +106,7 @@
     /** @brief React to hostname change
      *  @param[in] msg - sdbusplus message
      */
-    void hostnameChanged(sdbusplus::message::message& msg)
+    void hostnameChanged(sdbusplus::message::message& /*msg*/)
     {
         restart();
     }