[pattern rewriter] Dont return value from void function

src/parsing/pattern-rewriter.cc

Index: src/parsing/pattern-rewriter.cc
diff --git a/src/parsing/pattern-rewriter.cc b/src/parsing/pattern-rewriter.cc
index f714f6666c093bae1c24a68af43f9036cd83c021..edd283e9d62f7a484b4f16a7149b0ab4d7903ae2 100644
--- a/src/parsing/pattern-rewriter.cc
+++ b/src/parsing/pattern-rewriter.cc
@@ -309,7 +309,7 @@ void Parser::PatternRewriter::VisitRewritableExpression(
     block_->statements()->Add(factory()->NewExpressionStatement(expr, pos),
                               zone());
   }
-  return set_context(old_context);
+  set_context(old_context);
 }
 
 // When an extra declaration scope needs to be inserted to account for