added missing javadoc comment to justify the UnsupportedEncodingException

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/fileupload/trunk@1457973 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/src/main/java/org/apache/commons/fileupload/util/mime/MimeUtility.java b/src/main/java/org/apache/commons/fileupload/util/mime/MimeUtility.java
index af3963b..9aa88b9 100644
--- a/src/main/java/org/apache/commons/fileupload/util/mime/MimeUtility.java
+++ b/src/main/java/org/apache/commons/fileupload/util/mime/MimeUtility.java
@@ -74,7 +74,7 @@
      * @param text   The text to decode.
      *
      * @return The decoded test string.
-     * @throws UnsupportedEncodingException
+     * @throws UnsupportedEncodingException if the detected encoding in the input text is not supported.
      */
     public static String decodeText(String text) throws UnsupportedEncodingException {
         // if the text contains any encoded tokens, those tokens will be marked with "=?".  If the