From 2791ba1429947e4f699ea1d253db3815f2f33ff8 Mon Sep 17 00:00:00 2001
From: Attila Molnar <attilamolnar@hush.com>
Date: Tue, 26 Jan 2016 11:39:26 +0100
Subject: [PATCH] Fix handle leak in mbedtls_platform_entropy_poll() on Windows
 on error

---
 library/entropy_poll.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/library/entropy_poll.c b/library/entropy_poll.c
index 972ad2aea6..e2f45c78a5 100644
--- a/library/entropy_poll.c
+++ b/library/entropy_poll.c
@@ -67,7 +67,10 @@ int mbedtls_platform_entropy_poll( void *data, unsigned char *output, size_t len
     }
 
     if( CryptGenRandom( provider, (DWORD) len, output ) == FALSE )
+    {
+        CryptReleaseContext( provider, 0 );
         return( MBEDTLS_ERR_ENTROPY_SOURCE_FAILED );
+    }
 
     CryptReleaseContext( provider, 0 );
     *olen = len;