tree 1401ddf81240f93eed062ac88462cbfc654dbf70
parent e188bd7cfc43e441b78739f25588c251026ad6fa
author Steffen Meschkat <mesch@google.com> 1544567721 -0800
committer CQ bot account: commit-bot@chromium.org <commit-bot@chromium.org> 1544678758 +0000

[sessionmgr] Fix GetStoryInfo() crash.

It is possible that StoryProvider::GetStoryInfo() returns a nullptr
StoryInfoPtr, so we cannot unconditionally dereference it.

TESTED=the test case added to session_shell_test in https://fuchsia-review.googlesource.com/c/peridot/+/232386
crashes without this fix; with it it passes.

Change-Id: Id32623a8e4402a3e74578eabc8a66561be53b122