Fix MSVC 2015 compiler complaint

dm/DM.cpp

 /*
  * Copyright 2013 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "CrashHandler.h"
 #include "DMJsonWriter.h"
 #include "DMSrcSink.h"
@@ skipping 120 matching lines @@
 
 // Yo dawg, I heard you like signals so I caught a signal in your
 // signal handler so you can handle signals while you handle signals.
 // Let's not get into that situation.  Only print if we're the first ones to get a crash signal.
 static std::atomic<bool> in_signal_handler{false};
 
 #if defined(SK_BUILD_FOR_WIN32)
     static LONG WINAPI handler(EXCEPTION_POINTERS* e) {
         static const struct {
             const char* name;
-            int code;
+            DWORD code;
         } kExceptions[] = {
         #define _(E) {#E, E}
             _(EXCEPTION_ACCESS_VIOLATION),
             _(EXCEPTION_BREAKPOINT),
             _(EXCEPTION_INT_DIVIDE_BY_ZERO),
             _(EXCEPTION_STACK_OVERFLOW),
             // TODO: more?
         #undef _
         };
 
@@ skipping 1242 matching lines @@
                                                            Reporter* reporter,
                                                            GrContextFactory* factory);
 } // namespace skiatest
 
 #if !defined(SK_BUILD_FOR_IOS)
 int main(int argc, char** argv) {
     SkCommandLineFlags::Parse(argc, argv);
     return dm_main();
 }
 #endif