Move pointer Isolate::heap_ above bool Isolate::errors_fatal_ so Ubuntu's gcc 4.8.4 and Linaro's gc…

runtime/vm/isolate.cc

Index: runtime/vm/isolate.cc
diff --git a/runtime/vm/isolate.cc b/runtime/vm/isolate.cc
index 379287a67b4f94a77a36c0263c45cb0529b70d12..054b88681a1d9407f7f2fc698f7c844e03af7396 100644
--- a/runtime/vm/isolate.cc
+++ b/runtime/vm/isolate.cc
@@ -655,6 +655,7 @@ void BaseIsolate::AssertCurrentThreadIsMutator() const {
 Isolate::Isolate(const Dart_IsolateFlags& api_flags)
   :   vm_tag_(0),
       store_buffer_(new StoreBuffer()),
+      heap_(NULL),
       thread_registry_(new ThreadRegistry()),
       message_notify_callback_(NULL),
       name_(NULL),
@@ -665,7 +666,6 @@ Isolate::Isolate(const Dart_IsolateFlags& api_flags)
       pause_capability_(0),
       terminate_capability_(0),
       errors_fatal_(true),
-      heap_(NULL),
       object_store_(NULL),
       top_exit_frame_info_(0),
       init_callback_data_(NULL),