Fix bad reference in TLSException initialiser
diff --git a/common/rdr/TLSException.cxx b/common/rdr/TLSException.cxx
index bf8e97a..0f75a4d 100644
--- a/common/rdr/TLSException.cxx
+++ b/common/rdr/TLSException.cxx
@@ -34,7 +34,7 @@
 
 #ifdef HAVE_GNUTLS
 TLSException::TLSException(const char* s, int err_)
-  : Exception("%s: %s (%d)", s, gnutls_strerror(err), err), err(err_)
+  : Exception("%s: %s (%d)", s, gnutls_strerror(err_), err_), err(err_)
 {
 }
 #endif /* HAVE_GNUTLS */