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 bdf771c..5f7b0f2 100644
--- a/include/mbedtls/platform.h
+++ b/include/mbedtls/platform.h
@@ -181,7 +181,7 @@
#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 */