Kenny Root 7fbe4d2e74 Don't pay attention to string block on @null
When someone referenced an empty string by putting in the special value
"@null" the string block was kept, but when filtering themes this wasn't
filtered because the framework thought it was actually a null string.

Bug: 3000940
Change-Id: I1e9a0479ef761b3e388b562ae728c5da0f4b5deb
2011-01-20 13:18:03 -08:00
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