Fix misleading indentation; replace a couple of NULLs with nullptr. Resolves https://reviews.llvm.org/D42945 ; thanks to Bruce Mitchener for the patch.

llvm-svn: 324378
diff --git a/libcxx/include/__string b/libcxx/include/__string
index d30c7fd..44c5598 100644
--- a/libcxx/include/__string
+++ b/libcxx/include/__string
@@ -266,7 +266,7 @@
 char_traits<char>::find(const char_type* __s, size_t __n, const char_type& __a) _NOEXCEPT
 {
     if (__n == 0)
-        return NULL;
+        return nullptr;
 #if __has_feature(cxx_constexpr_string_builtins)
     return __builtin_char_memchr(__s, to_int_type(__a), __n);
 #elif _LIBCPP_STD_VER <= 14
@@ -278,7 +278,7 @@
             return __s;
         ++__s;
     }
-    return NULL;
+    return nullptr;
 #endif
 }
 
@@ -372,9 +372,9 @@
 char_traits<wchar_t>::find(const char_type* __s, size_t __n, const char_type& __a) _NOEXCEPT
 {
     if (__n == 0)
-        return NULL;
+        return nullptr;
 #if __has_feature(cxx_constexpr_string_builtins)
-        return __builtin_wmemchr(__s, __a, __n);
+    return __builtin_wmemchr(__s, __a, __n);
 #elif _LIBCPP_STD_VER <= 14
     return wmemchr(__s, __a, __n);
 #else
@@ -384,7 +384,7 @@
             return __s;
         ++__s;
     }
-    return NULL;
+    return nullptr;
 #endif
 }
 
diff --git a/libcxx/include/algorithm b/libcxx/include/algorithm
index 9d2690d..a94b07b 100644
--- a/libcxx/include/algorithm
+++ b/libcxx/include/algorithm
@@ -4703,9 +4703,9 @@
         ::new(__first2) value_type(_VSTD::move(*__first1));
         return;
     case 2:
-       __destruct_n __d(0);
+        __destruct_n __d(0);
         unique_ptr<value_type, __destruct_n&> __h2(__first2, __d);
-         if (__comp(*--__last1, *__first1))
+        if (__comp(*--__last1, *__first1))
         {
             ::new(__first2) value_type(_VSTD::move(*__last1));
             __d.__incr((value_type*)0);