PR_OPERATION_NOT_SUPPORTED_ERROR  311 net/base/nss_memio.c     PR_SetError(PR_OPERATION_NOT_SUPPORTED_ERROR, 0);
PR_OPERATION_NOT_SUPPORTED_ERROR  354 net/third_party/nss/ssl/unix_err.c     case ENODEV:	prError = PR_OPERATION_NOT_SUPPORTED_ERROR; break;
PR_OPERATION_NOT_SUPPORTED_ERROR  332 net/third_party/nss/ssl/win32err.c     case WSAEOPNOTSUPP: 	prError = PR_OPERATION_NOT_SUPPORTED_ERROR; break;