src/context: parse the case cmdline contain root=None #1753
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In the case of the cmdline contain root=None, rauc service fail. It is because the function get_cmdline_bootname_root() does not provide for this scenario and continue to the end before crashing. If cmdline contain root=None, the function get_cmdline_bootname_root() should give the same result as for case root=xxx is not define, namely returning NULL to avoid rauc failures. root=None on cmdline can occur on Yocto images for x86_64 system. Signed-off-by: Benjamin Missey <benjamin.missey@non.se.com>
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In the case of the cmdline contain root=None, rauc service fail. It is because the function get_cmdline_bootname_root() does not provide for this scenario and continue to the end before crashing. If cmdline contain root=None, the function get_cmdline_bootname_root() should give the same result as for case root=xxx is not define, namely returning NULL to avoid rauc failures.
root=None on cmdline can occur on Yocto images for x86_64 system.