Fix initializer list order in <regex> to be correct

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@242864 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/include/regex b/include/regex
index f8e57f4..6ac5e1d 100644
--- a/include/regex
+++ b/include/regex
@@ -2952,7 +2952,7 @@
 
     _LIBCPP_INLINE_VISIBILITY
     __lookahead(const basic_regex<_CharT, _Traits>& __exp, bool __invert, __node<_CharT>* __s, unsigned __mexp)
-        : base(__s), __exp_(__exp), __invert_(__invert), __mexp_(__mexp) {}
+        : base(__s), __exp_(__exp), __mexp_(__mexp), __invert_(__invert) {}
 
     virtual void __exec(__state&) const;
 };
@@ -5421,8 +5421,8 @@
       __unmatched_(),
       __prefix_(),
       __suffix_(),
-      __position_start_(),
-      __ready_(false)
+      __ready_(false),
+      __position_start_()
 {
 }