Kevin Easton 9c46ddddb6 Check for unset MSGLOG_FILE or CTOOLZ_DIR, or failed stat(), in readlog() ...

Unset MSGLOG_FILE or CTOOLZ_DIR could cause a null pointer dereference.

If stat() failed it dereferenced the bogus 'struct stat', and in the directory case
just silently failed.  Now it falls through to the "error opening" path.

2017-07-15 00:07:25 +10:00

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