service: Remove erroneous extern C from service name

Author: fwsGonzo

src/service_name.cpp

@@ -17,5 +17,5 @@
 
 #include <service>
 
-extern "C" const char* service_name__ = SERVICE_NAME;
-extern "C" const char* service_binary_name__ = SERVICE;
+const char* service_name__ = SERVICE_NAME;
+const char* service_binary_name__ = SERVICE;