Curl_polarsslthreadlock_thread_setup: clear array at init

... since if it fails to init the entire array and then tries to clean
it up, it would attempt to work on an uninitialized pointer.

diff --git a/lib/vtls/polarssl_threadlock.c b/lib/vtls/polarssl_threadlock.c
index 3b0ebf88665917e0d8d456b7c0f030f64674f910..b1eb7b746a1da3c3af348e4d4fb41c8a9033c6f5 100644 (file)
--- a/lib/vtls/polarssl_threadlock.c
+++ b/lib/vtls/polarssl_threadlock.c
@@ -5,7 +5,7 @@
  *                            | (__| |_| |  _ <| |___
  *                             \___|\___/|_| \_\_____|
  *
- * Copyright (C) 2013-2015, Daniel Stenberg, <daniel@haxx.se>, et al.
+ * Copyright (C) 2013-2016, Daniel Stenberg, <daniel@haxx.se>, et al.
  * Copyright (C) 2010, 2011, Hoi-Ho Chan, <hoiho.chan@gmail.com>
  *
  * This software is licensed as described in the file COPYING, which
@@ -52,7 +52,7 @@ int Curl_polarsslthreadlock_thread_setup(void)
   int i;
   int ret;
 
-  mutex_buf = malloc(NUMT * sizeof(POLARSSL_MUTEX_T));
+  mutex_buf = calloc(NUMT * sizeof(POLARSSL_MUTEX_T), 1);
   if(!mutex_buf)
     return 0;     /* error, no number of threads defined */