Clean up gn VC++ linker settings

chrome/installer/mini_installer/BUILD.gn

 # Copyright 2015 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.
 
 import("//build/config/features.gni")
 import("//build/config/ui.gni")
 import("//build_overrides/v8.gni")
 import("//chrome/version.gni")
 import("//third_party/icu/config.gni")
 import("//ui/base/ui_features.gni")
@@ skipping 172 matching lines @@
   ]
   configs += [
     ":mini_installer_compiler_flags",
     "//build/config/win:sdk_link",
     "//build/config/win:windowed",
   ]
 
   ldflags = [
     "/ENTRY:MainEntryPoint",
     "/FIXED:NO",
+    "/ignore:4199",
     "/NXCOMPAT",
   ]
 
   libs = [ "setupapi.lib" ]
 
   deps = [
     ":archive",
     ":lib",
     ":version",
     "//build/config/sanitizers:deps",
     "//build/win:default_exe_manifest",
   ]
 }