GetChildrenSizers crashes phaser if trying to destroy sizer with no children

Cant post an example as application is too complex but if you try to destroy a scene with a sizer without children, it freezes the game.

This function GetChildrenSizers should have an if check on the children variable before it tries to iterate it.

Before:

var GetChildrenSizers = function(out) {
    if (out === undefined) {
        out = [];
    }
    var children = this.sizerChildren,
        child;
    for (var i = 0, cnt = children.length; i < cnt; i++) {
        child = children[i];
        if (child.isRexSizer) {
            out.push(child);
        }
    }
    return out;
}
export default GetChildrenSizers;

After:

var GetChildrenSizers = function(out) {
    if (out === undefined) {
        out = [];
    }
    var children = this.sizerChildren,
        child;
    if(children) {
        for (var i = 0, cnt = children.length; i < cnt; i++) {
            child = children[i];
            if (child.isRexSizer) {
                out.push(child);
            }
        }
    }
    return out;
}
export default GetChildrenSizers;

Error:

GetChildrenSizers.js:7 Uncaught TypeError: Cannot read properties of undefined (reading 'length')

-- | -- | --
| GetChildrenSizers | @ | GetChildrenSizers.js:7

  | GetAllChildrenSizers | @ | GetAllChildrenSizers.js:6
  | GetAllChildrenSizers | @ | GetAllChildrenSizers.js:9
  | GetAllChildrenSizers | @ | GetAllChildrenSizers.js:9
  | GetAllChildrenSizers | @ | GetAllChildrenSizers.js:9
  | destroy | @ | BaseSizer.js:39
  | shutdown | @ | phaser.js:166925
  | emit | @ | phaser.js:1928
  | shutdown | @ | phaser.js:49454
  | stop | @ | phaser.js:100949
  | processQueue | @ | phaser.js:100024
  | update | @ | phaser.js:100278
  | step | @ | phaser.js:162805
  | step | @ | phaser.js:89366
  | step | @ | phaser.js:89613
  | requestAnimationFrame (async) |   |  
  | step | @ | phaser.js:89615

rexrainbow / phaser3-rex-notes

GetChildrenSizers crashes phaser if trying to destroy sizer with no children #269