Fixed compilation with -Wmissing-prototypes.
diff --git a/src/os/unix/ngx_posix_init.c b/src/os/unix/ngx_posix_init.c
index eea65a9..58e6f76 100644
--- a/src/os/unix/ngx_posix_init.c
+++ b/src/os/unix/ngx_posix_init.c
@@ -98,6 +98,8 @@
 }
 
 
+#if 0
+
 ngx_int_t
 ngx_posix_post_conf_init(ngx_log_t *log)
 {
@@ -122,3 +124,5 @@
 
     return NGX_OK;
 }
+
+#endif