Fix issue 284....

src/codegen-ia32.cc

Index: src/codegen-ia32.cc
===================================================================
--- src/codegen-ia32.cc	(revision 1583)
+++ src/codegen-ia32.cc	(working copy)
@@ -2683,14 +2683,17 @@
   CheckStack();  // TODO(1222600): ignore if body contains calls.
   VisitAndSpill(node->body());
 
-  // Next.
+  // Next.  Reestablish a spilled frame in case we are coming here via
+  // a continue in the body.
   node->continue_target()->Bind();
+  frame_->SpillAll();
   frame_->EmitPop(eax);
   __ add(Operand(eax), Immediate(Smi::FromInt(1)));
   frame_->EmitPush(eax);
   entry.Jump();
 
-  // Cleanup.
+  // Cleanup.  No need to spill because VirtualFrame::Drop is safe for
+  // any frame.
   node->break_target()->Bind();
   frame_->Drop(5);