Added guards to unwrap video connection and buffer #288
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I recently noticed a few crashes from users whenever the shot button was pressed. I am unable to exactly pinpoint the error, but the crash logs states that it is in
shotPressed. So I added two new guards just to make sure that the app at least don't crash when force-unwrapping the connection and buffer.Currently the crashes has occurred on iOS 12 on devices iPhone 6s, 7 and 8.