- comment out unused parameters

Reviewed By: everiq, igorsugak

Differential Revision: D7046710

fbshipit-source-id: 8e10b1f1e2aecebbfb229c742e214db887e5a461

folly/test/stl_tests/StlVectorTest.cpp

@@ -2010,8 +2010,11 @@ STL_TEST("23.2.1 Table 99.5", copyWithAllocator, is_copy_constructible, a, m) {
   ) << "only a shallow copy was made";
 }
 
-STL_TEST("23.2.1 Table 99.6", moveConstructionWithAllocator,
-         is_destructible, a) {
+STL_TEST(
+    "23.2.1 Table 99.6",
+    moveConstructionWithAllocator,
+    is_destructible,
+    /*a*/) {
   // there is nothing new to test here
 }