[NFC][libc++] Consistently use spaces to indent

rdar://problem/19988944

llvm-svn: 338933
Cr-Mirrored-From: sso://chromium.googlesource.com/_direct/external/github.com/llvm/llvm-project
Cr-Mirrored-Commit: 7c3492b00d99c81d4a58a8015dbe313eabaea799
diff --git a/include/numeric b/include/numeric
index b33b6a3..70ef173 100644
--- a/include/numeric
+++ b/include/numeric
@@ -104,15 +104,15 @@
 
 template<class InputIterator, class OutputIterator,
          class BinaryOperation, class UnaryOperation>
-	OutputIterator
-	transform_inclusive_scan(InputIterator first, InputIterator last,
+    OutputIterator
+    transform_inclusive_scan(InputIterator first, InputIterator last,
                              OutputIterator result,
                              BinaryOperation binary_op, UnaryOperation unary_op);  // C++17
 
 template<class InputIterator, class OutputIterator,
          class BinaryOperation, class UnaryOperation, class T>
-	OutputIterator
-	transform_inclusive_scan(InputIterator first, InputIterator last,
+    OutputIterator
+    transform_inclusive_scan(InputIterator first, InputIterator last,
                              OutputIterator result,
                              BinaryOperation binary_op, UnaryOperation unary_op,
                              T init);  // C++17