Use ternary expression

Author: garydgregory

src/main/java/org/apache/commons/codec/binary/StringUtils.java

@@ -124,10 +124,7 @@ public static ByteBuffer getByteBufferUtf8(final String string) {
      * @return the encoded bytes
      */
     private static byte[] getBytes(final String string, final Charset charset) {
-        if (string == null) {
-            return null;
-        }
-        return string.getBytes(charset);
+        return string == null ? null : string.getBytes(charset);
     }
 
     /**