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-rw-r--r--lib/zlib_inflate/inftrees.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/lib/zlib_inflate/inftrees.h b/lib/zlib_inflate/inftrees.h
index 5f5219b1240..b70b4731ac7 100644
--- a/lib/zlib_inflate/inftrees.h
+++ b/lib/zlib_inflate/inftrees.h
@@ -1,3 +1,6 @@
+#ifndef INFTREES_H
+#define INFTREES_H
+
/* inftrees.h -- header to use inftrees.c
* Copyright (C) 1995-2005 Mark Adler
* For conditions of distribution and use, see copyright notice in zlib.h
@@ -53,3 +56,4 @@ typedef enum {
extern int zlib_inflate_table (codetype type, unsigned short *lens,
unsigned codes, code **table,
unsigned *bits, unsigned short *work);
+#endif