Fix errors due to undefined variables

[CommanderRoot]

Before submitting pull request, please check that every commit:

• Has proper Signed-Off-By
• Has commit message which describes it
• Is needed on it's own, if you have just minor fixes to previous commits, you can squash them
• Any new functionality is covered by tests

This fixes these errors messages I'm getting:

[codecov]

Codecov Report

Merging #14208 into master will not change coverage.
The diff coverage is 0%.

@@            Coverage Diff            @@
##             master   #14208   +/-   ##
=========================================
  Coverage     52.89%   52.89%           
  Complexity    14353    14353           
=========================================
  Files           492      492           
  Lines         63664    63664           
=========================================
  Hits          33675    33675           
  Misses        29989    29989

[ibennetch]

Very similar to e64c50a although this pull request also changes https://github.com/phpmyadmin/phpmyadmin/pull/14208/files#diff-784ca0aad90bec9846c81577bbf2518fL222 which is not resolved in that commit, so perhaps there's more to be done here. @mauriciofauth could you take a look?

[mauriciofauth]

Merged, thanks for your contribution!
And sorry! I ended up committing e64c50a before seeing this PR.