Updated CREDITS.TXT

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@170062 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/CREDITS.TXT b/CREDITS.TXT
index f2ca38f..c3a81d8 100644
--- a/CREDITS.TXT
+++ b/CREDITS.TXT
@@ -74,3 +74,7 @@
 N: Argyrios Kyrtzidis
 E: kyrtzidis@apple.com
 D: Bug fixes.
+
+N: Zhang Xiongpang
+E: zhangxiongpang@gmail.com
+D: Minor patches and bug fixes.