Crash in GradientColor.lerp in 5.2 and later

[imbryk]

Describe the bug
After #2081 has been merged, certain animations with gradient trasforms are crashing.

The issue is that here:
https://github.com/airbnb/lottie-android/blob/master/lottie/src/main/java/com/airbnb/lottie/parser/GradientColorParser.java#L148
the length of steps for GradientColor can change, and this can result in
https://github.com/airbnb/lottie-android/blob/master/lottie/src/main/java/com/airbnb/lottie/animation/keyframe/GradientColorKeyframeAnimation.java
receiving GradientColors of different lengths.

This eventually leads to crash in this line:
https://github.com/airbnb/lottie-android/blob/master/lottie/src/main/java/com/airbnb/lottie/model/content/GradientColor.java#L37
with
java.lang.ArrayIndexOutOfBoundsException

What version of Lottie did you test this on?
versions 5.2 and 6.0 experience the crash
version 5.1.1 works fine (it's before the mentioned PR has been merged)

What version of Android did you test this on?
Android version makes no difference - the crash is related to library code and specific lottie files

Steps To Reproduce
I've provided the crasshing lottie files to @gpeal
Every attempt to display the animation ends with ArrayIndexOutOfBoundsException

Screenshots
the app just crashes

[gpeal]

Could you provide an animation (preferably an AEP file) that crashes?

[fadi-quader-mox]

My app crash with same exact error. It used to work before i bumped to latest version.

[gpeal]

Can you attach an animation that causes the crash? It'll be hard to debug or fix this without it.

[fadi-quader-mox]

@gpeal Could you please share with me how I can contact you or where I can send the files?

[gpeal]

You can send it to lottietestapps [at] gmail

[MSchmidt]

@gpeal I've sent you another animation that crashes with java.lang.ArrayIndexOutOfBoundsException. Hope it helps.