Whitespace maintenance. Remove a bunch of tabs that snuck in. No functionality change

llvm-svn: 220142
diff --git a/libcxx/test/utilities/optional/optional.nullops/eqaul.pass.cpp b/libcxx/test/utilities/optional/optional.nullops/eqaul.pass.cpp
index d137d30..54fb522 100644
--- a/libcxx/test/utilities/optional/optional.nullops/eqaul.pass.cpp
+++ b/libcxx/test/utilities/optional/optional.nullops/eqaul.pass.cpp
@@ -18,9 +18,9 @@
 int main()
 {
 #if _LIBCPP_STD_VER > 11
-	using std::experimental::optional;
-	using std::experimental::nullopt_t;
-	using std::experimental::nullopt;
+    using std::experimental::optional;
+    using std::experimental::nullopt_t;
+    using std::experimental::nullopt;
     
     {
     typedef int T;