Cleanups

runtime/vm/isolate.cc

Index: runtime/vm/isolate.cc
diff --git a/runtime/vm/isolate.cc b/runtime/vm/isolate.cc
index b18b50c6017f12a4be4c65707deb0e8112b1ee64..b5bbdf602bc597f9ac2c12847bf59f2696da2b40 100644
--- a/runtime/vm/isolate.cc
+++ b/runtime/vm/isolate.cc
@@ -1658,6 +1658,9 @@ void Isolate::Shutdown() {
   }
 #endif  // DEBUG
 
+  // Wait until all background compilation has finished.
+  BackgroundCompiler::Stop(background_compiler_);
+
   Thread* thread = Thread::Current();
 
   // First, perform higher-level cleanup that may need to allocate.
@@ -1706,8 +1709,6 @@ void Isolate::Shutdown() {
   }
 #endif
 
-  BackgroundCompiler::Stop(background_compiler_);
-
   // TODO(5411455): For now just make sure there are no current isolates
   // as we are shutting down the isolate.
   Thread::ExitIsolate();