Invalid argument supplied for foreach on line 314

warning: Invalid argument supplied for foreach() in .../sites/all/modules/path_redirect/path_redirect.module on line 314.

I get this error when I visit a view page + argument. It's strange because line 314 is in the middle of path_redirect_delete, and I don't see why that function should be called on all page loads. Putting an if is_array($where) before the foreach made the error stop appearing, but I don't think that's the actual problem here.

Would love another set of eyes on this.