user32: only attempt autoscroll line breaking on an edit control when we have a reasonable width to break to.

[Aric Stewart]

Some applications create an edit control of width 0 and insert text into 
it before adjusting the window size.  Uniscribe line breaking is much 
more expensive than the old method do breaking a very long strings down 
to its component glyphs is very slow especially when not needed.

fix for bug 28955
---
  dlls/user32/edit.c |    2 +-
  1 files changed, 1 insertions(+), 1 deletions(-)


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