Avoid a NullPointerException in SearchEntryParer

Updated the logic that the LDAP SDK uses in the in-memory directory
server and the ldifsearch tool to pare matching entries based on a
set of requested attributes in the in-memory.  If an entry included
an attribute with an invalid name, then the logic used to parse
an attribute description into the base attribute type name and a set
of attribute options would result in a null pointer exception.  It
now uses more lenient logic for parsing attribute descriptions, and
it can handle malformed attribute descriptions in a more graceful
manner.

docs/release-notes.html

@@ -26,6 +26,17 @@ <h3>Version 6.0.11</h3>
                   <br><br>
                 </li>
 
+                <li>
+                  Updated the logic that the LDAP SDK uses in the in-memory directory server and
+                  the ldifsearch tool to pare matching entries based on a set of requested
+                  attributes in the in-memory.  If an entry included an attribute with an invalid
+                  name, then the logic used to parse an attribute description into the base
+                  attribute type name and a set of attribute options would result in a null pointer
+                  exception.  It now uses more lenient logic for parsing attribute descriptions,
+                  and it can handle malformed attribute descriptions in a more graceful manner.
+                  <br><br>
+                </li>
+
                 <li>
                   Updated the TimestampArgument class to allow it to accept timestamps in the ISO
                   8601 format described in RFC 3339.

src/com/unboundid/ldap/listener/SearchEntryParer.java

@@ -216,19 +216,12 @@ else if (s.startsWith("@"))
    *
    * @return  An {@code ObjectPair} in which the first element is the attribute
    *          type name and the second is the list of options (or an empty
-   *          list if there are no options).  Alternately, a value of
-   *          {@code null} may be returned if the provided string does not
-   *          represent a valid attribute type description.
+   *          list if there are no options).
    */
   @NotNull()
   private static ObjectPair<String,List<String>> getNameWithOptions(
                                                       @NotNull final String s)
   {
-    if (! Attribute.nameIsValid(s, true))
-    {
-      return null;
-    }
-
     final String l = StaticUtils.toLowerCase(s);
 
     int semicolonPos = l.indexOf(';');