remote: exporter: The 'changed' variable is not set when exception oc…

[rvdgracht]

I started my exporter on a machine that doesn't have ser2net installed an was prompted with two exceptions. One for the missing ser2net and another one because 'changed' was not assigned.

UnboundLocalError: local variable 'changed' referenced before assignment

I figured we can either continue to the next iteration upon exception, or enclose the 'if changed' conditional into an else clause.. Since we don't do anything but checking for changes, I chose to add a 'continue'.

Signed-off-by: Robin van der Gracht robin@protonic.nl

[codecov-io]

Codecov Report

Merging #236 into master will decrease coverage by <.1%.
The diff coverage is 0%.

@@           Coverage Diff            @@
##           master    #236     +/-   ##
========================================
- Coverage    55.1%   55.1%   -0.1%     
========================================
  Files         105     105             
  Lines        6218    6219      +1     
========================================
  Hits         3431    3431             
- Misses       2787    2788      +1

Impacted Files	Coverage Δ
labgrid/remote/exporter.py	36.2% <0%> (-0.2%)	⬇️

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[Emantor]

@jluebbe included a similar fix in #245, closing this.