Use correct version of snprintf on Windows
platform.h defines MBEDTLS_PLATFORM_STD_SNPRINTF based on _WIN32. But while defining macro mbedtls_snprintf it sets it to STD C snprintf that is deprecated on Windows.
diff --git a/include/mbedtls/platform.h b/include/mbedtls/platform.h
index ed10775..2e21f03 100644
--- a/include/mbedtls/platform.h
+++ b/include/mbedtls/platform.h
@@ -210,7 +210,7 @@
#if defined(MBEDTLS_PLATFORM_SNPRINTF_MACRO)
#define mbedtls_snprintf MBEDTLS_PLATFORM_SNPRINTF_MACRO
#else
-#define mbedtls_snprintf snprintf
+#define mbedtls_snprintf MBEDTLS_PLATFORM_STD_SNPRINTF
#endif /* MBEDTLS_PLATFORM_SNPRINTF_MACRO */
#endif /* MBEDTLS_PLATFORM_SNPRINTF_ALT */