perlcritic: Don't conditionally declare variables

Dependencies

• [2] VU2OLHD2 Move most of AddBuilds to hydra-eval-jobset
• [3] SGG4O42H perl: jobsetevals -> jobset via by jobset_id
• [4] UUWTUFAM CoverityScan: $b -> $build (perlcritic)
• [5] VH5ZABDR Add a page to show the latest evaluations for the entire server
• [6] THUMRES3 hydra: add Coverity Scan plugin
• [7] IPBPZCWR Fix sysbuild
• [8] MRJCQ4EO Don't use given/when
• [9] UEMB7PTH Add option eval_substituter
• [10] U5ZWDBW3 Ensure that each eval is compared to the previous one from the same jobset
• [*] 2GK5DOU7 * Downloading closures.
• [*] N22GPKYT * Put info about logs / build products in the DB.

Change contents

• replacement in src/lib/Hydra/Helper/Nix.pm at line 309
  [3.1733]→[3.1733:1809](∅→∅)
  − my $prevInfo = getEvalInfo($cache, $prevEval) if defined $prevEval;
  [3.1733]

  [3.1700]
  + my $prevInfo;

  + $prevInfo = getEvalInfo($cache, $prevEval) if defined $prevEval;
• replacement in src/lib/Hydra/Plugin/CoverityScan.pm at line 85
  [3.2697]→[3.2697:2781](∅→∅)
  − my $version = $2 if $shortName =~ /^($pkgNameRE)-($versionRE)-coverity-int.*$/;
  [3.2697]

  [3.2781]
  + my $version;

  + $version = $2 if $shortName =~ /^($pkgNameRE)-($versionRE)-coverity-int.*$/;
• replacement in src/script/hydra-eval-jobset at line 125
  [2.2637]→[2.2637:2704](∅→∅)
  − my $version = $2 if $relName =~ /^($pkgNameRE)-($versionRE)$/;
  [2.2637]

  [2.2704]
  + my $version;

  + $version = $2 if $relName =~ /^($pkgNameRE)-($versionRE)$/;
• replacement in src/script/hydra-eval-jobset at line 171
  [2.3955]→[2.3955:4026](∅→∅)
  − my $version = $2 if $relName =~ /^($pkgNameRE)-($versionRE)$/;
  [2.3955]

  [2.4026]
  + my $version;

  + $version = $2 if $relName =~ /^($pkgNameRE)-($versionRE)$/;