fix building by bcc broken in r2130

src/os/win32/ngx_files.c

@@ -501,3 +501,10 @@ ngx_file_append_mode(ngx_fd_t fd)
 
     return NGX_OK;
 }
+
+
+ngx_int_t
+ngx_directio(ngx_fd_t fd)
+{
+    return 0;
+}

src/os/win32/ngx_files.h

@@ -216,7 +216,7 @@ ssize_t ngx_write_chain_to_file(ngx_file_t *file, ngx_chain_t *ce,
     off_t offset, ngx_pool_t *pool);
 
 
-#define ngx_directio(fd)            0
+ngx_int_t ngx_directio(ngx_fd_t fd);
 #define ngx_directio_n              "ngx_directio_n"