[libcxx] [test] Untabify, NFC.

llvm-svn: 309464
diff --git a/libcxx/test/std/containers/sequences/array/indexing.pass.cpp b/libcxx/test/std/containers/sequences/array/indexing.pass.cpp
index 3a5b9ee..43c4947 100644
--- a/libcxx/test/std/containers/sequences/array/indexing.pass.cpp
+++ b/libcxx/test/std/containers/sequences/array/indexing.pass.cpp
@@ -27,7 +27,7 @@
 constexpr bool check_idx( size_t idx, double val )
 {
     std::array<double, 3> arr = {1, 2, 3.5};
-	return arr[idx] == val;
+    return arr[idx] == val;
 }
 #endif