Fix analyzer Windows bots.

Change-Id: I8afe2b5dcc7a3b4a4aefc543811df6b542d15d6c
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/154840
Reviewed-by: Brian Wilkerson <brianwilkerson@google.com>
Commit-Queue: Konstantin Shcheglov <scheglov@google.com>
diff --git a/pkg/analyzer/lib/src/dart/analysis/feature_set_provider.dart b/pkg/analyzer/lib/src/dart/analysis/feature_set_provider.dart
index 6705ce4..5fe2dd4 100644
--- a/pkg/analyzer/lib/src/dart/analysis/feature_set_provider.dart
+++ b/pkg/analyzer/lib/src/dart/analysis/feature_set_provider.dart
@@ -93,8 +93,8 @@
         }
       }
     } else if (uri.isScheme('file')) {
-      fileUriToNormalizedPath(_resourceProvider.pathContext, uri);
-      var package = _packages.packageForPath(uri.path);
+      var uriPath = fileUriToNormalizedPath(_resourceProvider.pathContext, uri);
+      var package = _packages.packageForPath(uriPath);
       if (package != null) {
         return package;
       }