logger: fix hardfault for invalid SDLOG_PROFILE setting #15236
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If some bits are set but no topic was added, _subscriptions was null but later accessed. During normal use this only happens when switching between different firmware versions with different SDLOG_PROFILE definition (with custom config).
I find this generally useful for debugging.
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If some bits are set but no topic was added, _subscriptions was null but
later accessed.
During normal use this only happens when switching between different
firmware versions with different SDLOG_PROFILE definition (with custom
config).
Also: param: also show unused params for 'param show -c' (I find this generally useful for debugging).