natClass.cc (registerClosure): Make sure closures is non NULL.

2010-01-26  Andrew Haley  <aph@redhat.com>

	* java/lang/natClass.cc (registerClosure): Make sure closures is
	non NULL.

From-SVN: r156257

libjava/ChangeLog

+2010-01-26  Andrew Haley  <aph@redhat.com>
+
+	* java/lang/natClass.cc (registerClosure): Make sure closures is
+	non NULL.
+
 2010-01-19  Matthias Klose  <doko@ubuntu.com>
 
 	* Regenerate .class files.

libjava/java/lang/natClass.cc

@@ -689,9 +689,12 @@ void
 _Jv_ClosureList::registerClosure (jclass klass, void *ptr)
 {
   _Jv_ClosureList **closures = klass->engine->get_closure_list (klass);
-  this->ptr = ptr;
-  this->next = *closures;
-  *closures = this;
+  if (closures)
+    {
+      this->ptr = ptr;
+      this->next = *closures;
+      *closures = this;
+    }
 }
 #endif