Only first line of log is used for recognizing format

[FaffeF]

lnav version

v0.11.1

Describe the bug

When recognizing the log format, only the first hit in the file is used.

This means that the line "...Last message repeated 1 times." matches the syslog format, and subsequent lines in the log are not recognized as some more specific format

To Reproduce

• open a log file where the first line is the "...Last message repeated..."
• observe that the recognized format is syslog instead of something more specific

Expected behavior

Analyze a few more lines at the start of the log file to avoid matching generic formats. Or mark certain patterns "not to be used for format recognition"