Fix typos in build files for msmap2tsv, handoff.

third_party/codesighs/BUILD.gn

 # Copyright 2014 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")
 
 executable("codesighs") {
   sources = [
     "codesighs.c",
   ]
@@ skipping 10 matching lines @@
   configs -= [ "//build/config/compiler:chromium_code" ]
   configs += [ "//build/config/compiler:no_chromium_code" ]
 }
 
 if (is_win) {
   executable("msmap2tsv") {
     sources = [
       "msmap2tsv.c",
     ]
 
-    libs += [ "dbghelp.lib" ]
+    libs = [ "dbghelp.lib" ]
 
     configs -= [ "//build/config/compiler:chromium_code" ]
     configs += [ "//build/config/compiler:no_chromium_code" ]
   }
 
   executable("msdump2symdb") {
     sources = [
       "msdump2symdb.c",
     ]
 
     configs -= [ "//build/config/compiler:chromium_code" ]
     configs += [ "//build/config/compiler:no_chromium_code" ]
   }
 } else {
   executable("nm2tsv") {
     sources = [
       "nm2tsv.c",
     ]
 
     configs -= [ "//build/config/compiler:chromium_code" ]
     configs += [ "//build/config/compiler:no_chromium_code" ]
   }
 }