update travis/pecl

diff --git a/travis/pecl b/travis/pecl
index 0815aa6d8727870e6bf8409700925abfaaf2b723..3d880c84e94ed6eee885dec36931d67d37232fea 160000 (submodule)
--- a/travis/pecl
+++ b/travis/pecl
@@ -1 +1 @@
-Subproject commit 0815aa6d8727870e6bf8409700925abfaaf2b723
+Subproject commit 3d880c84e94ed6eee885dec36931d67d37232fea