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Diffstat (limited to 'src/os/unix/ngx_thread.h')
-rw-r--r--src/os/unix/ngx_thread.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/os/unix/ngx_thread.h b/src/os/unix/ngx_thread.h
index 0b065d8ec..a85750d47 100644
--- a/src/os/unix/ngx_thread.h
+++ b/src/os/unix/ngx_thread.h
@@ -103,7 +103,7 @@ extern ngx_int_t ngx_threaded;
#define ngx_log_tid 0
#define TID_T_FMT "%d"
-#define ngx_mutex_lock(m)
+#define ngx_mutex_lock(m) NGX_OK
#define ngx_mutex_unlock(m)
#endif