nginx-0.1.14-RELEASE import

    *) Feature: the autoconfiguration directives:
       --http-client-body-temp-path=PATH, --http-proxy-temp-path=PATH, and
       --http-fastcgi-temp-path=PATH

    *) Change: the directory name for the temporary files with the client
       request body is specified by directive client_body_temp_path, by
       default it is <prefix>/client_body_temp.

    *) Feature: the ngx_http_fastcgi_module and the directives:
       fastcgi_pass, fastcgi_root, fastcgi_index, fastcgi_params,
       fastcgi_connect_timeout, fastcgi_send_timeout, fastcgi_read_timeout,
       fastcgi_send_lowat, fastcgi_header_buffer_size, fastcgi_buffers,
       fastcgi_busy_buffers_size, fastcgi_temp_path,
       fastcgi_max_temp_file_size, fastcgi_temp_file_write_size,
       fastcgi_next_upstream, and fastcgi_x_powered_by.

    *) Bugfix: the "[alert] zero size buf" error; the bug had appeared in
       0.1.3.

    *) Change: the URI must be specified after the host name in the
       proxy_pass directive.

    *) Change: the %3F symbol in the URI was considered as the argument
       string start.

    *) Feature: the unix domain sockets support in the
       ngx_http_proxy_module.

    *) Feature: the ssl_engine and ssl_ciphers directives.
       Thanks to Sergey Skvortsov for SSL-accelerator.
diff --git a/src/core/ngx_conf_file.h b/src/core/ngx_conf_file.h
index 0e94056..8dcdd54 100644
--- a/src/core/ngx_conf_file.h
+++ b/src/core/ngx_conf_file.h
@@ -239,8 +239,8 @@
     }
 
 #define ngx_conf_merge_str_value(conf, prev, default)                        \
-    if (conf.len == 0) {                                                     \
-        if (prev.len) {                                                      \
+    if (conf.data == NULL) {                                                 \
+        if (prev.data) {                                                      \
             conf.len = prev.len;                                             \
             conf.data = prev.data;                                           \
         } else {                                                             \