Description: Check that animation has frames before accessing
Bug: https://github.com/Samsung/rlottie/issues/522
Origin: https://github.com/Samsung/rlottie/pull/523/commits/7446363b482978746bd6e7b5dbc4f49553f9f50f
Author: Nicholas Guriev <guriev-ns@ya.ru>
Last-Update: Wed, 02 Mar 2022 19:12:30 +0300

--- a/src/lottie/lottiemodel.h
+++ b/src/lottie/lottiemodel.h
@@ -380,6 +380,7 @@ public:
             value().toPath(path);
         } else {
             const auto &vec = animation().mKeyFrames;
+            if (vec.empty()) return;
             if (vec.front().mStartFrame >= frameNo)
                 return vec.front().mValue.mStartValue.toPath(path);
             if(vec.back().mEndFrame <= frameNo)