[ADT] Add trailing comma on TYPED_TEST_SUITE

This avoids a -pedantic warning:
warning: ISO C++11 requires at least one argument for the "..." in a variadic macro

See also google/googletest#2271

Reviewed By: arames, bkramer

Differential Revision: https://reviews.llvm.org/D110283

Author: Alexandre Rames

llvm/unittests/ADT/SequenceTest.cpp

@@ -35,7 +35,7 @@ using IntegralTypes = testing::Types<uint8_t,   // 0
                                      >;
 
 template <class T> class StrongIntTest : public testing::Test {};
-TYPED_TEST_SUITE(StrongIntTest, IntegralTypes);
+TYPED_TEST_SUITE(StrongIntTest, IntegralTypes, );
 TYPED_TEST(StrongIntTest, Operations) {
   using T = TypeParam;
   auto Max = std::numeric_limits<T>::max();