tree bc82cd745e37fda7d1221bc2a87028b17bc2c044
parent 9197b34a0e703ccbe7c407251e01f78d4943ce92
author Paul Berry <paulberry@google.com> 1559744660 +0000
committer commit-bot@chromium.org <commit-bot@chromium.org> 1559744660 +0000

Fix return value in GraphBuilder.visitVariableDeclaration.

This method should return `null`, since it doesn't visit an expression.

Change-Id: I018241c0d2e9b9f00bfe293352cf2707551c81e6
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/104881
Reviewed-by: Brian Wilkerson <brianwilkerson@google.com>
Commit-Queue: Paul Berry <paulberry@google.com>