bugfix: fixed errors and warnings with C compilers without variadic macro support.

Author: agentzh

src/ddebug.h

@@ -1,6 +1,7 @@
 #ifndef DDEBUG_H
 #define DDEBUG_H
 
+
 #include <ngx_config.h>
 #include <ngx_core.h>
 #include <ngx_http.h>
@@ -22,7 +23,8 @@
 
 #include <stdarg.h>
 
-static void dd(const char * fmt, ...) {
+static ngx_inline void
+dd(const char * fmt, ...) {
 }
 
 #    endif
@@ -38,7 +40,8 @@ static void dd(const char * fmt, ...) {
 #           define dd_main_req_count 0
 #       endif
 
-static void dd_enter_helper(ngx_http_request_t *r, const char *func) {
+static ngx_inline void
+dd_enter_helper(ngx_http_request_t *r, const char *func) {
     ngx_http_posted_request_t       *pr;
 
     fprintf(stderr, ">enter %s %.*s %.*s?%.*s c:%d m:%p r:%p ar:%p pr:%p",
@@ -78,10 +81,12 @@ static void dd_enter_helper(ngx_http_request_t *r, const char *func) {
 
 #include <stdarg.h>
 
-static void dd(const char * fmt, ...) {
+static ngx_inline void
+dd(const char * fmt, ...) {
 }
 
-static void dd_enter() {
+static ngx_inline void
+dd_enter() {
 }
 
 #   endif