Update freetype sources (2.6.2) in third party.

third_party/freetype2/src/src/gzip/infblock.h

Index: third_party/freetype2/src/src/gzip/infblock.h
diff --git a/third_party/freetype2/src/src/gzip/infblock.h b/third_party/freetype2/src/src/gzip/infblock.h
new file mode 100644
index 0000000000000000000000000000000000000000..c2535a1e452d0c2f59646783044bd4c0c54de8c0
--- /dev/null
+++ b/third_party/freetype2/src/src/gzip/infblock.h
@@ -0,0 +1,36 @@
+/* infblock.h -- header to use infblock.c
+ * Copyright (C) 1995-2002 Mark Adler
+ * For conditions of distribution and use, see copyright notice in zlib.h
+ */
+
+/* WARNING: this file should *not* be used by applications. It is
+   part of the implementation of the compression library and is
+   subject to change. Applications should only use zlib.h.
+ */
+
+#ifndef _INFBLOCK_H
+#define _INFBLOCK_H
+
+struct inflate_blocks_state;
+typedef struct inflate_blocks_state FAR inflate_blocks_statef;
+
+local  inflate_blocks_statef * inflate_blocks_new OF((
+    z_streamp z,
+    check_func c,               /* check function */
+    uInt w));                   /* window size */
+
+local  int inflate_blocks OF((
+    inflate_blocks_statef *,
+    z_streamp ,
+    int));                      /* initial return code */
+
+local  void inflate_blocks_reset OF((
+    inflate_blocks_statef *,
+    z_streamp ,
+    uLongf *));                  /* check value on output */
+
+local  int inflate_blocks_free OF((
+    inflate_blocks_statef *,
+    z_streamp));
+
+#endif /* _INFBLOCK_H */