commit 8654e4ae3e16eb447420fb6f3b65382e16a7c955
author Christopher Fujino <christopherfujino@gmail.com> Fri Apr 23 20:24:03 2021 -0700
committer GitHub <noreply@github.com> Fri Apr 23 20:24:03 2021 -0700
tree 5ddace64e2efb7b15c44cc85aafd2b20a8a690be
parent e5414695d4e429aff3e7756663dc16d6d7faa6b8

begin migrating //flutter/dev/tools to null-safety (#80834)

dev/tools/find_engine_commit.dart

diff --git a/dev/tools/find_engine_commit.dart b/dev/tools/find_engine_commit.dart
index 8b87553..c8d67af 100644
--- a/dev/tools/find_engine_commit.dart
+++ b/dev/tools/find_engine_commit.dart
@@ -29,7 +29,7 @@
   _validate(args);
   await _fetchUpstream();
   await _fetchUpstream(engineRepo);
-  String flutterRevision;
+  String? flutterRevision;
   await for (final FlutterEngineRevision revision in _logEngineVersions()) {
     if (!await containsRevision(args[0], revision.engineRevision)) {
       if (flutterRevision == null) {