Guard decl and use of gmtime mutex by HAVE_TIME_DATE and !GMTIME_ALT
diff --git a/include/mbedtls/threading.h b/include/mbedtls/threading.h
index a65eefa..9235a1e 100644
--- a/include/mbedtls/threading.h
+++ b/include/mbedtls/threading.h
@@ -107,7 +107,7 @@
#if defined(MBEDTLS_FS_IO)
extern mbedtls_threading_mutex_t mbedtls_threading_readdir_mutex;
#endif
-#if defined(MBEDTLS_HAVE_TIME_DATE)
+#if defined(MBEDTLS_HAVE_TIME_DATE) && !defined(MBEDTLS_PLATFORM_GMTIME_ALT)
#if !defined(_WIN32) && (defined(unix) || \
defined(__unix) || defined(__unix__) || (defined(__APPLE__) && \
defined(__MACH__)))
@@ -122,7 +122,7 @@
#endif /* !_POSIX_VERSION || 200112L > _POSIX_THREAD_SAFE_FUNCTIONS */
#endif /* !_WIN32 && (unix || __unix || __unix__ ||
* (__APPLE__ && __MACH__)) */
-#endif /* MBEDTLS_HAVE_TIME_DATE */
+#endif /* MBEDTLS_HAVE_TIME_DATE && !MBEDTLS_PLATFORM_GMTIME_ALT */
#endif /* MBEDTLS_THREADING_C */
#ifdef __cplusplus