Unnecessary size check missing some cases

[lars-seifert]

Description says: "Check for code that checks that a collection is non-empty before sending it an iteration message (e.g., do:, collect:, etc.). Since the collection iteration messages work for empty collections, we do not need to clutter up our method with the extra size check.".
But it does not find "collection isEmpty not ifFalse: [collection do: [:each | ...]]"
Enhance it. Test is existing, maybe enhance it further!?