don't try to keylock the PowerShot S20 since it does this by itself when the selector wheel is turned to "PC mode". reported by Christian Heller.
don't try to keylock the PowerShot S20 since it does this by itself when
the selector wheel is turned to "PC mode". reported by Christian Heller.


git-svn-id: 40dd595c6684d839db675001a64203a1457e7319@4192 67ed7778-7388-44ab-90cf-0a291f65f57c

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