Merge pull request #5628 from acozzette/update-gtest

Updated googletest submodule to the most recent upstream commit

kokoro/linux/cpp_distcheck/build.sh

@@ -2,6 +2,8 @@
 #
 # Build file to set up and run tests
 
+set -e  # exit immediately on error
+
 # Change to repo root
 cd $(dirname $0)/../../..
 

third_party/googletest

@@ -1 +1 @@
-Subproject commit c3bb0ee2a63279a803aaad956b9b26d74bf9e6e2
+Subproject commit 5ec7f0c4a113e2f18ac2c6cc7df51ad6afc24081