From feb4b6e6b30512454ba354e26e2d2816a1b72289 Mon Sep 17 00:00:00 2001
From: James Zern <jzern@google.com>
Date: Wed, 31 Jul 2013 22:50:57 -0700
Subject: [PATCH] thread.h: #ifdef when checking WEBP_USE_THREAD

prevents a warning with -Wundef and is consistent with thread.c

Change-Id: I60fa337c3b9daeea7302e86802402cb943cdb262
---
 src/utils/thread.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/utils/thread.h b/src/utils/thread.h
index 13a61a4c..32d59307 100644
--- a/src/utils/thread.h
+++ b/src/utils/thread.h
@@ -22,7 +22,7 @@
 extern "C" {
 #endif
 
-#if WEBP_USE_THREAD
+#ifdef WEBP_USE_THREAD
 
 #if defined(_WIN32)
 
@@ -55,7 +55,7 @@ typedef int (*WebPWorkerHook)(void*, void*);
 
 // Synchronize object used to launch job in the worker thread
 typedef struct {
-#if WEBP_USE_THREAD
+#ifdef WEBP_USE_THREAD
   pthread_mutex_t mutex_;
   pthread_cond_t  condition_;
   pthread_t       thread_;