CC (gcc) [M mtree.so] mtree_mod.o mtree_mod.c: In function 'rpc_mtree_print_node': mtree_mod.c:1046:18: warning: unused variable 'attr' [-Wunused-variable] struct mi_attr* attr= NULL; ^ mtree_mod.c:1045:18: warning: unused variable 'node' [-Wunused-variable] struct mi_node* node = NULL; ^ mtree_mod.c: In function 'rpc_mtree_list': mtree_mod.c:1115:18: warning: unused variable 'rpl' [-Wunused-variable] struct mi_node* rpl = NULL; ^ mtree_mod.c:1114:18: warning: unused variable 'rpl_tree' [-Wunused-variable] struct mi_root* rpl_tree = NULL; ^ mtree_mod.c:1113:18: warning: unused variable 'node' [-Wunused-variable] struct mi_node* node = NULL; ^