fix building by msvc7

src/http/modules/ngx_http_access_module.c

diff --git a/src/http/modules/ngx_http_access_module.c b/src/http/modules/ngx_http_access_module.c
index c1e7718..bfc36e9 100644
--- a/src/http/modules/ngx_http_access_module.c
+++ b/src/http/modules/ngx_http_access_module.c
@@ -190,7 +190,7 @@
         ml = ngx_inet6_ntop(rule6[i].mask.s6_addr, mt, NGX_INET6_ADDRSTRLEN);
         al = ngx_inet6_ntop(rule6[i].addr.s6_addr, at, NGX_INET6_ADDRSTRLEN);
 
-        ngx_log_debug3(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
+        ngx_log_debug6(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
                        "access: %*s %*s %*s", cl, ct, ml, mt, al, at);
         }
 #endif