analysisd: fix off-by-one in OS_CleanMSG. #1824
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When removing the '[ID xx facility.severity]' substring of a syslog message in `OS_CleanMSG` care needs to be taken to stay within the bounds of the msg buffer when advancing past the `] ` in the msg. Prev. to this commit the `pieces` pointer is incremented by 2 when there may be only 1 character remaining before the null terminator.
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When removing the
"[ID xx facility.severity] "substring of a syslog message inOS_CleanMSGcare needs to be taken to stay within the bounds of the msg buffer when advancing past the"] "in the msg.Prev. to this commit the
piecespointer is incremented by 2 when there may be only 1 character remaining before the null terminator.Resolves #1816