From: Eli Zaretskii <eliz@gnu.org>
Date: Tue, 13 Aug 2013 16:20:39 +0000 (+0300)
Subject: Fail zlib-decompress-region if loading zlib on Windows failed.
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Fail zlib-decompress-region if loading zlib on Windows failed.

 src/decompress.c (Fzlib_decompress_region) [WINDOWSNT]: Return Qnil
 if loading zlib failed.
---

diff --git a/src/ChangeLog b/src/ChangeLog
index 70a1fa28db5..1cb8002ccf7 100644
--- a/src/ChangeLog
+++ b/src/ChangeLog
@@ -1,3 +1,8 @@
+2013-08-13  Eli Zaretskii  <eliz@gnu.org>
+
+	* decompress.c (Fzlib_decompress_region) [WINDOWSNT]: Return Qnil
+	if loading zlib failed.
+
 2013-08-13  Jan Djärv  <jan.h.d@swipnet.se>
 
 	* nsterm.m (ns_set_vertical_scroll_bar): Fix breakage intruduced by
diff --git a/src/decompress.c b/src/decompress.c
index b7cd8a6c404..452a9210402 100644
--- a/src/decompress.c
+++ b/src/decompress.c
@@ -146,6 +146,8 @@ This function can be called only in unibyte buffers.  */)
 #ifdef WINDOWSNT
   if (!zlib_initialized)
     zlib_initialized = init_zlib_functions ();
+  if (!zlib_initialized)
+    return Qnil;
 #endif
 
   /* This is a unibyte buffer, so character positions and bytes are