static_cast to long, otherwise MSVC 2008 won't compile.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@115503 91177308-0d34-0410-b5e6-96231b3b80d8

unittests/Support/System.cpp

@@ -11,6 +11,6 @@ class SystemTest : public ::testing::Test {
 TEST_F(SystemTest, TimeValue) {
   sys::TimeValue now = sys::TimeValue::now();
   time_t now_t = time(NULL);
-  EXPECT_TRUE(abs(static_cast<time_t>(now_t - now.toEpochTime())) < 2);
+  EXPECT_TRUE(abs(static_cast<long>(now_t - now.toEpochTime())) < 2);
 }
 }