Duplicate change from NodeLocator to NodeLocator2

pkg/analyzer/lib/src/dart/ast/utilities.dart

Index: pkg/analyzer/lib/src/dart/ast/utilities.dart
diff --git a/pkg/analyzer/lib/src/dart/ast/utilities.dart b/pkg/analyzer/lib/src/dart/ast/utilities.dart
index 5f2d0b47ddc1357e9b27c3999b6dd0341bd5557d..96d278c4f3f895719bbe27c2738a53fc3926d381 100644
--- a/pkg/analyzer/lib/src/dart/ast/utilities.dart
+++ b/pkg/analyzer/lib/src/dart/ast/utilities.dart
@@ -4077,7 +4077,10 @@ class NodeLocator2 extends UnifyingAstVisitor<Object> {
     Token endToken = node.endToken;
     // Don't include synthetic tokens.
     while (endToken != beginToken) {
-      if (endToken.type == TokenType.EOF || !endToken.isSynthetic) {
+      // Fasta scanner reports unterminated string literal errors
+      // and generates a synthetic string token with non-zero length.
+      // Because of this, check for length > 0 rather than !isSynthetic.
+      if (endToken.type == TokenType.EOF || endToken.length > 0) {
         break;
       }
       endToken = endToken.previous;