Happify dumb coverage checker

src/parsing/parser.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/parsing/parser.h"
 
 #include "src/api.h"
 #include "src/ast/ast.h"
 #include "src/ast/ast-expression-rewriter.h"
 #include "src/ast/ast-expression-visitor.h"
@@ skipping 3507 matching lines @@
   Expect(Token::LPAREN, CHECK_OK);
   for_scope->set_start_position(scanner()->location().beg_pos);
   bool is_let_identifier_expression = false;
   DeclarationParsingResult parsing_result;
   if (peek() != Token::SEMICOLON) {
     if (peek() == Token::VAR || (peek() == Token::CONST && allow_const()) ||
         (peek() == Token::LET && IsNextLetKeyword())) {
       ParseVariableDeclarations(kForStatement, &parsing_result, nullptr,
                                 CHECK_OK);
 
-      ForEachStatement::VisitMode mode;
+      ForEachStatement::VisitMode mode = ForEachStatement::ENUMERATE;
       int each_beg_pos = scanner()->location().beg_pos;
       int each_end_pos = scanner()->location().end_pos;
 
       if (CheckInOrOf(&mode, ok)) {
         if (!*ok) return nullptr;
         if (parsing_result.declarations.length() != 1) {
           ParserTraits::ReportMessageAt(
               parsing_result.bindings_loc,
               MessageTemplate::kForInOfLoopMultiBindings,
               ForEachStatement::VisitModeString(mode));
@@ skipping 146 matching lines @@
             IsLexicalVariableMode(parsing_result.descriptor.mode)
                 ? &lexical_bindings
                 : nullptr,
             CHECK_OK);
       }
     } else {
       int lhs_beg_pos = peek_position();
       ExpressionClassifier classifier(this);
       Expression* expression = ParseExpression(false, &classifier, CHECK_OK);
       int lhs_end_pos = scanner()->location().end_pos;
-      ForEachStatement::VisitMode mode;
+      ForEachStatement::VisitMode mode = ForEachStatement::ENUMERATE;
       is_let_identifier_expression =
           expression->IsVariableProxy() &&
           expression->AsVariableProxy()->raw_name() ==
               ast_value_factory()->let_string();
 
       bool is_for_each = CheckInOrOf(&mode, ok);
       if (!*ok) return nullptr;
       bool is_destructuring =
           is_for_each && allow_harmony_destructuring_assignment() &&
           (expression->IsArrayLiteral() || expression->IsObjectLiteral());
@@ skipping 3099 matching lines @@
                         try_block, target);
     final_loop = target;
   }
 
   return final_loop;
 }
 
 
 }  // namespace internal
 }  // namespace v8