delete snmp/agent.o on make clean

git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@35608 65c4cc65-6c06-0410-ace0-fbb531ad65f3

res/Makefile

@@ -54,6 +54,7 @@ clean-depend:
 
 clean: clean-depend
 	rm -f *.so *.o
+	rm -f snmp/*.o
 
 res_odbc.so: res_odbc.o
 	$(CC) $(SOLINK) -o $@ $< $(ODBC_LIB)