[nginx] tiny style

[洪志道]

Hi!

static ngx_int_t
ngx_http_limit_req_init_zone(ngx_shm_zone_t *shm_zone, void *data)
{
    ngx_http_limit_req_ctx_t  *octx = data;

    size_t                     len;
    ngx_http_limit_req_ctx_t  *ctx;

    ctx = shm_zone->data;

    if (octx) {
        if (ctx->key.value.len != octx->key.value.len
            || ngx_strncmp(ctx->key.value.data, octx->key.value.data,
                           ctx->key.value.len)
               != 0)
        {
            ngx_log_error(NGX_LOG_EMERG, shm_zone->shm.log, 0,
                       -  "limit_req \"%V\" uses the \"%V\" key "
                       + "limit_req_zone \"%V\" uses the \"%V\" key "
                          "while previously it used the \"%V\" key",
                          &shm_zone->shm.name, &ctx->key.value,
                          &octx->key.value);
            return NGX_ERROR;
        }

        ...
}

B.R~
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