False positive undefinedVariable

[i582]

Code Example

function f() {
  if (1) {
    $info = [];
  }

  if (!isset($info)) {
    return null;
  }

  return $info;
}

Actual Behavior

<critical> ERROR   undefinedVariable: Undefined variable $info at /Users/petrmakhnev/noverify/example/error.php:12
  return $info;
         ^^^^^

Expected Behavior

No error.