rubocop fixes

lib/gitlab/ci/build/policy/changes.rb

@@ -5,6 +5,8 @@ module Ci
     module Build
       module Policy
         class Changes < Policy::Specification
+          FNMATCH_FLAGS = File::FNM_PATHNAME | File::FNM_DOTMATCH | File::FNM_EXTGLOB
+
           def initialize(globs)
             @globs = Array(globs)
           end
@@ -18,18 +20,18 @@ def satisfied_by?(pipeline, context)
               positive_matches = []
 
               @globs.each do |glob|
-                if glob.start_with?('!') # negative glob pattern
-                  negative_matches << File.fnmatch?(glob[1..], path, File::FNM_PATHNAME | File::FNM_DOTMATCH | File::FNM_EXTGLOB)
+                if glob.start_with?('!')
+                  negative_matches << File.fnmatch?(glob[1..], path, FNMATCH_FLAGS)
                 else
-                  positive_matches << File.fnmatch?(glob, path, File::FNM_PATHNAME | File::FNM_DOTMATCH | File::FNM_EXTGLOB)
+                  positive_matches << File.fnmatch?(glob, path, FNMATCH_FLAGS)
                 end
               end
 
               if positive_matches.empty? && negative_matches.empty?
                 # Path doesn't match any of our patterns, so not a match
-                false  
+                false
               elsif positive_matches.empty?
-                # No positive matches means that we were only supplied negated patterns. 
+                # No positive matches means that we were only supplied negated patterns.
                 # Which is the same as saying "Allow all EXCEPT these (negated) globs." So,
                 # if none of our negated globs matched, then the path is okay to allow.
                 !negative_matches.any?
@@ -43,4 +45,4 @@ def satisfied_by?(pipeline, context)
       end
     end
   end
-end
\ No newline at end of file
+end