From 1d83a701b69e0b29b5ae3b471f724650f3eea241 Mon Sep 17 00:00:00 2001
From: Craig Tiller <ctiller@google.com>
Date: Tue, 17 Jan 2017 09:35:42 -0800
Subject: [PATCH] Fix memory leak

---
 src/cpp/client/secure_credentials.cc | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/cpp/client/secure_credentials.cc b/src/cpp/client/secure_credentials.cc
index 7fc315bb38128..25f6bab7f2583 100644
--- a/src/cpp/client/secure_credentials.cc
+++ b/src/cpp/client/secure_credentials.cc
@@ -214,6 +214,10 @@ void MetadataCredentialsPluginWrapper::InvokePlugin(
   cb(user_data, md.empty() ? nullptr : &md[0], md.size(),
      static_cast<grpc_status_code>(status.error_code()),
      status.error_message().c_str());
+  for (auto it = md.begin(); it != md.end(); ++it) {
+    grpc_slice_unref(it->key);
+    grpc_slice_unref(it->value);
+  }
 }
 
 MetadataCredentialsPluginWrapper::MetadataCredentialsPluginWrapper(