Fix bug that causes swift compiler crash #3
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This patch unwraps the optional UnsafePointer data before calling withMemoryRebound. This can prevent compiler from crash because somehow calling withMemoryRebound() with an optional UnsafePointer will cause compiler crash which has been reported in https://bugs.swift.org/browse/SR-2668.
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This patch unwraps the optional UnsafePointer data before calling
withMemoryRebound. This can prevent compiler from crash because somehow
calling withMemoryRebound() with an optional UnsafePointer will cause
compiler crash which has been reported in
https://bugs.swift.org/browse/SR-2668.