Fix googlemock test bug

asan catches it.

Change-Id: Id2bccabc141e6c750f73df7a79a56f24c229ff0a
diff --git a/third_party/googletest/googlemock/test/gmock_test.cc b/third_party/googletest/googlemock/test/gmock_test.cc
index ae5e22c..6466668 100644
--- a/third_party/googletest/googlemock/test/gmock_test.cc
+++ b/third_party/googletest/googlemock/test/gmock_test.cc
@@ -51,9 +51,9 @@
                         const ::std::string& expected_gmock_verbose) {
   const ::std::string old_verbose = GMOCK_FLAG(verbose);
 
-  int argc = M;
+  int argc = M - 1;
   InitGoogleMock(&argc, const_cast<Char**>(argv));
-  ASSERT_EQ(N, argc) << "The new argv has wrong number of elements.";
+  ASSERT_EQ(N - 1, argc) << "The new argv has wrong number of elements.";
 
   for (int i = 0; i < N; i++) {
     EXPECT_STREQ(new_argv[i], argv[i]);