Fix tls_ctx memleak in s3 client creation

Reproduction scenario:

```
try(var tlsc = new TlsContext(); var c = new S3Client(new S3ClientOptions()
                    .withRegion("eu-west-1")
                    .withClientBootstrap(ClientBootstrap.getOrCreateStaticDefault())
                    .withTlsContext(tlsc)
            )) {
            }
```

--> this code will quickly go OOM without the fix in this commit

src/native/s3_client.c

@@ -521,7 +521,9 @@ JNIEXPORT jlong JNICALL Java_software_amazon_awssdk_crt_s3_S3Client_s3ClientNew(
         env, &proxy_options, jni_proxy_host, jni_proxy_authorization_username, jni_proxy_authorization_password);
 
     aws_mem_release(aws_jni_get_allocator(), s3_tcp_keep_alive_options);
-
+    if (!tls_options) {
+        aws_tls_connection_options_clean_up(tls_options);
+    }
     return (jlong)client;
 }