Fix sticky error propagation from thread to isolate

runtime/vm/isolate.h

Index: runtime/vm/isolate.h
diff --git a/runtime/vm/isolate.h b/runtime/vm/isolate.h
index e40b3900876e47edc888d878c8ac940b5ac8bc19..c6a5bd9d565eecdc514a28b4c6ac9d421849a080 100644
--- a/runtime/vm/isolate.h
+++ b/runtime/vm/isolate.h
@@ -581,6 +581,9 @@ class Isolate : public BaseIsolate {
   void set_deoptimized_code_array(const GrowableObjectArray& value);
   void TrackDeoptimizedCode(const Code& code);
 
+  RawError* sticky_error() const { return sticky_error_; }
+  void clear_sticky_error();
+
   bool compilation_allowed() const { return compilation_allowed_; }
   void set_compilation_allowed(bool allowed) {
     compilation_allowed_ = allowed;
@@ -808,6 +811,8 @@ class Isolate : public BaseIsolate {
 
   RawGrowableObjectArray* deoptimized_code_array_;
 
+  RawError* sticky_error_;
+
   // Background compilation.
   BackgroundCompiler* background_compiler_;