Silence a false coverity warning by changing the code a bit.

base/json_reader.cc

 // Copyright (c) 2006-2008 The Chromium 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 "base/json_reader.h"
 
 #include "base/float_util.h"
 #include "base/logging.h"
 #include "base/scoped_ptr.h"
 #include "base/string_util.h"
@@ skipping 583 matching lines @@
           ++json_pos_;
           return true;
         default:
           ++json_pos_;
       }
     }
   } else if ('*' == next_char) {
     // Block comment, read until */
     json_pos_ += 2;
     while ('\0' != *json_pos_) {
-      switch (*json_pos_) {
-        case '*':
-          if ('/' == *(json_pos_ + 1)) {
-            json_pos_ += 2;
-            return true;
-          }
-        default:
-          ++json_pos_;
+      if ('*' == *json_pos_ && '/' == *(json_pos_ + 1)) {
+        json_pos_ += 2;
+        return true;
       }
+      ++json_pos_;
     }
   } else {
     return false;
   }
   return true;
 }
 
 void JSONReader::SetErrorMessage(const char* description,
                                  const wchar_t* error_pos) {
   int line_number = 1;
   int column_number = 1;
 
   // Figure out the line and column the error occured at.
   for (const wchar_t* pos = start_pos_; pos != error_pos; ++pos) {
     if (*pos == '\0') {
       NOTREACHED();
       return;
     }
 
     if (*pos == '\n') {
       ++line_number;
       column_number = 1;
     } else {
       ++column_number;
     }
   }
 
   error_message_ = FormatErrorMessage(line_number, column_number, description);
 }