Further slight improvements

lib/gitlab/blame.rb

@@ -24,11 +24,7 @@ module Gitlab
           current_group = { commit: commit, lines: [] }
         end
 
-        current_group[:lines] << if highlight
-                                   highlighted_lines[i].html_safe
-                                 else
-                                   line
-                                 end
+        current_group[:lines] << (highlight ? highlighted_lines[i].html_safe : line)
 
         prev_sha = commit.sha
         i += 1

lib/gitlab/git/blame.rb

@@ -40,8 +40,9 @@ module Gitlab
           elsif m = /^(\w{40}) (\d+) (\d+)/.match(line)
             # Removed these instantiations for performance but keeping them for reference:
             # commit_id, old_lineno, lineno = m[1], m[2].to_i, m[3].to_i
-            commits[m[1]] = nil unless commits.key?(m[1])
-            info[m[3].to_i] = [m[1], m[2].to_i]
+            commit_id = m[1]
+            commits[commit_id] = nil unless commits.key?(commit_id)
+            info[m[3].to_i] = [commit_id, m[2].to_i]
           end
         end