Add missing dot in comment

runtime/vm/parser.cc

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "vm/parser.h"
 
 #include "vm/bigint_operations.h"
 #include "vm/class_finalizer.h"
 #include "vm/compiler.h"
 #include "vm/compiler_stats.h"
@@ skipping 4891 matching lines @@
   }
   // Skip optional metadata.
   if (CurrentToken() == Token::kAT) {
     const intptr_t saved_pos = TokenPos();
     SkipMetadata();
     const bool is_var_decl = IsVariableDeclaration();
     SetPosition(saved_pos);
     return is_var_decl;
   }
   if ((CurrentToken() != Token::kIDENT) && (CurrentToken() != Token::kCONST)) {
-    // Not a legal type identifier or const keyword or metadata
+    // Not a legal type identifier or const keyword or metadata.
     return false;
   }
   const intptr_t saved_pos = TokenPos();
   bool is_var_decl = false;
   bool have_type = false;
   if (CurrentToken() == Token::kCONST) {
     ConsumeToken();
     have_type = true;  // Type is Dynamic.
   }
   if (IsIdentifier()) {  // Type or variable name.
@@ skipping 4547 matching lines @@
 void Parser::SkipQualIdent() {
   ASSERT(IsIdentifier());
   ConsumeToken();
   if (CurrentToken() == Token::kPERIOD) {
     ConsumeToken();  // Consume the kPERIOD token.
     ExpectIdentifier("identifier expected after '.'");
   }
 }
 
 }  // namespace dart