RTC_[D]CHECK_op: Remove "u" suffix on integer constants

webrtc/base/flags.cc

 /*
  *  Copyright 2006 The WebRTC 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 in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
@@ skipping 240 matching lines @@
     }
     *argc = j;
   }
 
   // parsed all flags successfully
   return 0;
 }
 
 void FlagList::Register(Flag* flag) {
   RTC_DCHECK(flag);
-  RTC_DCHECK_GT(strlen(flag->name()), 0u);
+  RTC_DCHECK_GT(strlen(flag->name()), 0);
   // NOTE: Don't call Lookup() within Register because it accesses the name_
   // of other flags in list_, and if the flags are coming from two different
   // compilation units, the initialization order between them is undefined, and
   // this will trigger an asan initialization-order-fiasco error.
   flag->next_ = list_;
   list_ = flag;
 }
 
 #if defined(WEBRTC_WIN)
 WindowsCommandLineArguments::WindowsCommandLineArguments() {
@@ skipping 20 matching lines @@
   // need to free each string in the array, and then the array.
   for(int i = 0; i < argc_; i++) {
     delete[] argv_[i];
   }
 
   delete[] argv_;
 }
 #endif  // WEBRTC_WIN
 
 }  // namespace rtc