re PR libgcj/7180 (possible bug in javax.naming.spi.NamingManager.getPlusPath())

	* javax/naming/spi/NamingManager.java (getPlusPath): Don't create
	StringTokenizer on null string.  For PR libgcj/7180.
	From daveho@cs.umd.edu.

From-SVN: r55166

libjava/ChangeLog

+2002-07-01  Tom Tromey  <tromey@redhat.com>
+
+	* javax/naming/spi/NamingManager.java (getPlusPath): Don't create
+	StringTokenizer on null string.  For PR libgcj/7180.
+	From daveho@cs.umd.edu.
+
 2002-06-24  Tom Tromey  <tromey@redhat.com>
 
 	* java/net/natPlainDatagramSocketImpl.cc (BooleanClass): Removed.

libjava/javax/naming/spi/NamingManager.java

-/* Copyright (C) 2000, 2001 Free Software Foundation
+/* Copyright (C) 2000, 2001, 2002 Free Software Foundation
    
    This file is part of libgcj.
    
@@ -166,7 +166,7 @@ public class NamingManager
       path = path2;
     else if (path2 != null)
       path += ":" + path2;
-    return new StringTokenizer (path, ":");
+    return new StringTokenizer (path != null ? path : "", ":");
   }
 
   public static Object getObjectInstance (Object refInfo,