Use EXPECT_FALSE instead of EXPECT_EQ(false, ...

[chill]

Summary

Commit https://reviews.llvm.org/rL324489 added

EXPECT_EQ(false, N->isUnsigned());

which older GCC versions dislike for some reason. Anyway, it looks like the proper GTest way
is to use EXPECT_FALSE, etc.

[gkistanova]

LGTM.
This seems a proper GTest way, indeed.
Just for the record, the warning was reported by clang 5.0.1.

llvm/trunk/unittests/IR/MetadataTest.cpp

 }
 
 typedef MetadataTest DIEnumeratorTest;
 
 TEST_F(DIEnumeratorTest, get) {
   auto *N = DIEnumerator::get(Context, 7, false, "name");
   EXPECT_EQ(dwarf::DW_TAG_enumerator, N->getTag());
   EXPECT_EQ(7, N->getValue());
-  EXPECT_EQ(false, N->isUnsigned());
+  EXPECT_FALSE(N->isUnsigned());
   EXPECT_EQ("name", N->getName());
   EXPECT_EQ(N, DIEnumerator::get(Context, 7, false, "name"));
 
   EXPECT_NE(N, DIEnumerator::get(Context, 7, true, "name"));
   EXPECT_NE(N, DIEnumerator::get(Context, 8, false, "name"));
   EXPECT_NE(N, DIEnumerator::get(Context, 7, false, "nam"));
 
   TempDIEnumerator Temp = N->clone();