Corrected Logger case to logger in error condition

[apop5]

In a less used conditional case, self.Logger was referenced, whereas in the rest of the file self.logger is used. Resulted in an exception.

File "Lib\site-packages\edk2toollib\uefi\edk2\path_utilities.py", line 111, in init
self.Logger.log(logging.WARNING, warning)
^^^^^^^^^^^
AttributeError: 'Edk2Path' object has no attribute 'Logger'. Did you mean: 'logger'?

[codecov]

Codecov Report

Attention: 2 lines in your changes are missing coverage. Please review.

Comparison is base (2e82a08) 81.01% compared to head (61d5022) 81.01%.

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #438   +/-   ##
=======================================
  Coverage   81.01%   81.01%           
=======================================
  Files          57       57           
  Lines        7284     7284           
=======================================
  Hits         5901     5901           
  Misses       1383     1383           

Files	Coverage Δ
edk2toollib/uefi/edk2/path_utilities.py	96.55% <0.00%> (ø)

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