[Patch] Fix assert failure in KMimeType

[Stephen Leaf]

When trying to open a file dialog I ran across this. dialog still doesn't work 
but you can see it loading at least! Ok to commit?

The next issue is around KMimeTypeFactory::findMimeTypeByName and 
kio/kio/kfileitem.cpp:758
no idea about KSyCoca stuff.
apparently its not finding the inode/directory mimetype which I do get errors 
about it not existing among many others?
-----------------------
kio (KService*): WARNING: parent mimetype not found:application/octet-stream
kio (KService*): WARNING: parent mimetype not found:inode/directory
-----------------------

-- 
Stephen Leaf
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