Hey,

I noticed that openat syscall in strace output has some trailing information which broke the regex. I added this to the regex pattern.

I do have some concerns:

• I do not have any large corpus of tests to confirm this change doesn't break anything besides "works on my machine"
• I am running strace with strace -ff -yy, I don't know what's the supported strace flags for lnav
• The added regex group is very general and will grab basically anything at the end of otherwise valid strace string. That seems somewhat risky

Example log:
df.strace.112142.log