Fixes:
agent.c: In function '_DtCm_init_agent':
agent.c:160: warning: passing argument 5 of 'registerrpc' from incompatible pointer type
agent.c:160: warning: passing argument 6 of 'registerrpc' from incompatible pointer type
agent.c:167: warning: passing argument 5 of 'registerrpc' from incompatible pointer type
agent.c:167: warning: passing argument 6 of 'registerrpc' from incompatible pointer type