Tamas TEVESZ 9911ecd985 make wtrimspace() use internal api ...

make wtrimspace() use wings' own function for a task

semantics change: it used to segfault given null, now it returns null.
this doesn't affect any current use (there's exactly one..), and i see
no harm in this behaviour, and perceive this to be more natural.

2010-03-17 16:39:53 +01:00

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