Upgrade versions of vendored libs

vendor/github.com/DataDog/zstd/threading.c

@@ -1,13 +1,15 @@
+#ifndef USE_EXTERNAL_ZSTD
 /**
  * Copyright (c) 2016 Tino Reichardt
  * All rights reserved.
  *
+ * You can contact the author at:
+ * - zstdmt source repository: https://github.com/mcmilk/zstdmt
+ *
  * This source code is licensed under both the BSD-style license (found in the
  * LICENSE file in the root directory of this source tree) and the GPLv2 (found
  * in the COPYING file in the root directory of this source tree).
- *
- * You can contact the author at:
- * - zstdmt source repository: https://github.com/mcmilk/zstdmt
+ * You may select, at your option, one of the above-listed licenses.
  */
 
 /**
@@ -77,11 +79,12 @@ int ZSTD_pthread_join(ZSTD_pthread_t thread, void **value_ptr)
 
 #if defined(ZSTD_MULTITHREAD) && DEBUGLEVEL >= 1 && !defined(_WIN32)
 
-#include <stdlib.h>
+#define ZSTD_DEPS_NEED_MALLOC
+#include "zstd_deps.h"
 
 int ZSTD_pthread_mutex_init(ZSTD_pthread_mutex_t* mutex, pthread_mutexattr_t const* attr)
 {
-    *mutex = (pthread_mutex_t*)malloc(sizeof(pthread_mutex_t));
+    *mutex = (pthread_mutex_t*)ZSTD_malloc(sizeof(pthread_mutex_t));
     if (!*mutex)
         return 1;
     return pthread_mutex_init(*mutex, attr);
@@ -93,14 +96,14 @@ int ZSTD_pthread_mutex_destroy(ZSTD_pthread_mutex_t* mutex)
         return 0;
     {
         int const ret = pthread_mutex_destroy(*mutex);
-        free(*mutex);
+        ZSTD_free(*mutex);
         return ret;
     }
 }
 
 int ZSTD_pthread_cond_init(ZSTD_pthread_cond_t* cond, pthread_condattr_t const* attr)
 {
-    *cond = (pthread_cond_t*)malloc(sizeof(pthread_cond_t));
+    *cond = (pthread_cond_t*)ZSTD_malloc(sizeof(pthread_cond_t));
     if (!*cond)
         return 1;
     return pthread_cond_init(*cond, attr);
@@ -112,9 +115,11 @@ int ZSTD_pthread_cond_destroy(ZSTD_pthread_cond_t* cond)
         return 0;
     {
         int const ret = pthread_cond_destroy(*cond);
-        free(*cond);
+        ZSTD_free(*cond);
         return ret;
     }
 }
 
 #endif
+
+#endif /* USE_EXTERNAL_ZSTD */