Add entry for myself.


git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@180728 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/CREDITS.TXT b/CREDITS.TXT
index c34e219..61b3542 100644
--- a/CREDITS.TXT
+++ b/CREDITS.TXT
@@ -74,6 +74,10 @@
 N: Richard Smith
 D: Minor patches.
 
+N: Joerg Sonnenberger
+E: joerg@NetBSD.org
+D: NetBSD port.
+
 N: Michael van der Westhuizen
 E: r1mikey at gmail dot com