Decoder::operator() already returns a proper struct with named members, so decomposing that using SB can do no good, except introducing a dependency on the order of the struct, which is counter-productive. Fix by receiving the result in a proper variable and using the struct's member names. Amends 53622aca2ad0d13bd16d8307dc28f915c8878b75. The idea may have been to avoid churning the surrounding code, but follow-up c08766abf2267f4eeda159c5688309d22d319722 touched all lines using the result, anyway, so we don't need SB anymore to keep the old names. Pick-to: 6.10 Change-Id: I2890754c2c2189cc2fa395f4500ca6c3cb115d7d Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>