fixed bug in java viewer when disabling security types

git-svn-id: svn://svn.code.sf.net/p/tigervnc/code/trunk@4428 3789f03b-4d11-0410-bbf8-ca57d06f2519
diff --git a/java/src/com/tigervnc/rfb/Security.java b/java/src/com/tigervnc/rfb/Security.java
index 5e572e3..95a66c3 100644
--- a/java/src/com/tigervnc/rfb/Security.java
+++ b/java/src/com/tigervnc/rfb/Security.java
@@ -118,7 +118,7 @@
     return false;
   }
 
-  public static void DisableSecType(int secType) { enabledSecTypes.remove(secType); }
+  public static void DisableSecType(int secType) { enabledSecTypes.remove((Object)secType); }
 
   public static int secTypeNum(String name) {
     if (name.equalsIgnoreCase("None"))      return secTypeNone;