RFE: Patch for potential browser crash by the plugin

[Deepak Bhole]

Hi,

Attached patch fixes Bug# 619:
http://icedtea.classpath.org/bugzilla/show_bug.cgi?id=619

ChangeLog:
2011-01-19  Deepak Bhole <dbhole at redhat.com>

   * plugin/icedteanp/java/netscape/javascript/JSObject.java (finalize):
   Proceed with finalization only if JSObject is valid. 


Okay for HEAD, 1.0 and backport to maintained icedtea6 branches?

Cheers,
Deepak
-------------- next part --------------
diff -r bbbe02c58ddc plugin/icedteanp/java/netscape/javascript/JSObject.java
--- a/plugin/icedteanp/java/netscape/javascript/JSObject.java	Mon Dec 20 13:37:59 2010 -0500
+++ b/plugin/icedteanp/java/netscape/javascript/JSObject.java	Wed Dec 22 14:34:58 2010 -0500
@@ -259,6 +259,11 @@
      * JavaScript object.
      */
     protected void finalize() {
+
+        // Proceed if this is a valid object (0L == default long == invalid)
+        if (internal == 0L)
+            return;
+
         PluginDebug.debug("JSObject.finalize ");
         PluginAppletViewer.JavaScriptFinalize(internal);
     }