>>261
　　if (A_init() != 0) goto A_FAILED;
　　if (B_init() != 0) goto B_FAILED;
　　if (C_init() != 0) goto C_FAILED;
　　if (D_init() != 0) goto D_FAILED;

　　return 0;

D_FAILED:
　　D_finish();
C_FAILED:
　　C_finish();
B_FAILED:
　　B_finish();
A_FAILED:
　　A_finish();
　　return -1;