unnecessary initialization of StringBuilder

Author: jetersen

src/main/java/com/bettercloud/vault/SslConfig.java

@@ -625,7 +625,7 @@ private KeyStore inputStreamToKeyStore(final InputStream inputStream, final Stri
      */
     private static String inputStreamToUTF8(final InputStream input) throws IOException {
         final BufferedReader in = new BufferedReader(new InputStreamReader(input, StandardCharsets.UTF_8));
-        final StringBuilder utf8 = new StringBuilder("");
+        final StringBuilder utf8 = new StringBuilder();
         String str;
         while ((str = in.readLine()) != null) {
             // String concatenation is less efficient, but for some reason the line-breaks (which are necessary