Fix an off-by-one error in deoptimization compression.

runtime/vm/flow_graph_compiler_ia32.cc

Index: runtime/vm/flow_graph_compiler_ia32.cc
diff --git a/runtime/vm/flow_graph_compiler_ia32.cc b/runtime/vm/flow_graph_compiler_ia32.cc
index 151ca9f89496e392401edb9ea30d4c3029167e67..2ea07d5a3a8a93b1e5c667d8e84dee3bbc100e51 100644
--- a/runtime/vm/flow_graph_compiler_ia32.cc
+++ b/runtime/vm/flow_graph_compiler_ia32.cc
@@ -48,7 +48,8 @@ bool FlowGraphCompiler::SupportsUnboxedMints() {
 
 
 RawDeoptInfo* CompilerDeoptInfo::CreateDeoptInfo(FlowGraphCompiler* compiler,
-                                                 DeoptInfoBuilder* builder) {
+                                                 DeoptInfoBuilder* builder,
+                                                 const Array& deopt_table) {
   if (deopt_env_ == NULL) return DeoptInfo::null();
 
   intptr_t stack_height = compiler->StackSize();
@@ -132,7 +133,8 @@ RawDeoptInfo* CompilerDeoptInfo::CreateDeoptInfo(FlowGraphCompiler* compiler,
     builder->AddCopy(previous->ValueAt(i), previous->LocationAt(i), slot_ix++);
   }
 
-  const DeoptInfo& deopt_info = DeoptInfo::Handle(builder->CreateDeoptInfo());
+  const DeoptInfo& deopt_info =
+      DeoptInfo::Handle(builder->CreateDeoptInfo(deopt_table));
   return deopt_info.raw();
 }