Philippe Mathieu-Daudé 403a905b03 9pfs: avoid sign conversion error simplifying the code
(note this is how other functions also handle the errors).

hw/9pfs/9p.c:948:18: warning: Loss of sign in implicit conversion
        offset = err;
                 ^~~

Reported-by: Clang Static Analyzer
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Greg Kurz <groug@kaod.org>
2017-09-05 14:01:16 +02:00
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