Fixed compiler warning.

diff --git a/MagickCore/nt-base-private.h b/MagickCore/nt-base-private.h
index fe9dac1bc457b6f351c99c3836b52d3d7160e2c3..a42565284f4b506a87e154e6746f2855727c9eb3 100644 (file)
--- a/MagickCore/nt-base-private.h
+++ b/MagickCore/nt-base-private.h
@@ -71,6 +71,8 @@ typedef struct _NTMEMORYSTATUSEX
 } NTMEMORYSTATUSEX;
 
 #if !defined(__MINGW32__) && !defined(__MINGW64__)
+struct timeval;
+
 struct timezone
 {
   int