mergeArrays function InvalidReturnStatement

[vudaltsov]

https://psalm.dev/r/8381fec80a

I could rewrite it with generic keys and values, but then it does not take lists into account: https://psalm.dev/r/90f1dd39e0

[psalm-github-bot[bot]]

I found these snippets:

https://psalm.dev/r/8381fec80a

```php $arrays * @return T */ function mergeArrays(array $arrays): array { return array_merge(...array_values($arrays)); } /** * @return list */ function getList(): array { return []; } /** * @psalm-trace $_list */ $_list = mergeArrays([getList(), getList()]); ``` ``` Psalm output (using commit 38c452a): ERROR: InvalidReturnStatement - 11:12 - The inferred type 'array' does not match the declared return type 'T:fn-mergearrays as array' for mergeArrays ERROR: InvalidReturnType - 7:12 - The declared return type 'T:fn-mergearrays as array' for mergeArrays is incorrect, got 'array' INFO: Trace - 25:1 - $_list: list ```

https://psalm.dev/r/90f1dd39e0

```php > $arrays * @return array */ function mergeArrays(array $arrays): array { return array_merge(...array_values($arrays)); } /** * @return list */ function getList(): array { return []; } /** * @psalm-trace $_list */ $_list = mergeArrays([getList(), getList()]); ``` ``` Psalm output (using commit 38c452a): INFO: Trace - 26:1 - $_list: array ```