[parser] Fix bug in destructuring binding for catch.

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 2999 matching lines @@
         if (!is_simple) {
           DeclarationDescriptor descriptor;
           descriptor.declaration_kind = DeclarationDescriptor::NORMAL;
           descriptor.parser = this;
           descriptor.scope = scope_;
           descriptor.hoist_scope = nullptr;
           descriptor.mode = LET;
           descriptor.declaration_pos = pattern->position();
           descriptor.initialization_pos = pattern->position();
 
+          // Initializer position for variables declared by the pattern.
+          const int initializer_position = position();
+
           DeclarationParsingResult::Declaration decl(
-              pattern, pattern->position(),
+              pattern, initializer_position,
               factory()->NewVariableProxy(catch_variable));
 
           Block* init_block =
               factory()->NewBlock(nullptr, 8, true, kNoSourcePosition);
           PatternRewriter::DeclareAndInitializeVariables(
               init_block, &descriptor, &decl, nullptr, CHECK_OK);
           catch_block->statements()->Add(init_block, zone());
         }
 
         // TODO(adamk): This should call ParseBlock in order to properly
@@ skipping 3965 matching lines @@
                         try_block, target);
     final_loop = target;
   }
 
   return final_loop;
 }
 
 
 }  // namespace internal
 }  // namespace v8