[Patch] fix for crash on about: under caret mode

[Leo Savernik]

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Hello,

This is the fix for a crash I found on the about: page of konqueror. When 
starting the konqueror web browser, immediately after the about: screen is 
displayed, pressing F7, then the right arrow key made konqueror crash.

The attached patch fixes it. Ok to commit?

mfg
	Leo
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