Fix 'ValueError' upon empty linenos variable

[yarula]

Profiler crashes in case when linenos is an empty list
'ValueError: max() arg is an empty sequence'

Let's add an extra check for linenos before passing it to a max-function

[Erotemic]

Thanks for the fix! Can you add a unit test that triggers this case?

[codecov]

Codecov Report

Merging #118 (6e9dcc7) into main (5994c08) will not change coverage.
The diff coverage is 0.00%.

@@           Coverage Diff           @@
##             main     #118   +/-   ##
=======================================
  Coverage   54.13%   54.13%           
=======================================
  Files           4        4           
  Lines         375      375           
  Branches       57       57           
=======================================
  Hits          203      203           
  Misses        155      155           
  Partials       17       17           

Impacted Files	Coverage Δ
line_profiler/line_profiler.py	41.63% <0.00%> (ø)

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[Erotemic]

This is probably fine without a test and it does fix an issue. Merging.