style: Fix style issues

Library/Homebrew/cli/args.rb

@@ -266,10 +266,10 @@ module Homebrew
             Keg.new(dirs.first)
           else
             f = if name.include?("/") || File.exist?(name)
-                  Formulary.factory(name)
-                else
-                  Formulary.from_rack(rack)
-                end
+              Formulary.factory(name)
+            else
+              Formulary.from_rack(rack)
+            end
 
             unless (prefix = f.installed_prefix).directory?
               raise MultipleVersionsInstalledError, rack.basename

Library/Homebrew/cmd/reinstall.rb

@@ -69,11 +69,11 @@ module Homebrew
     end
     Homebrew.messages.display_messages
 
-    unless casks.empty?
-      reinstall_cmd = Cask::Cmd::Reinstall.new(casks)
-      reinstall_cmd.verbose = args.verbose?
-      reinstall_cmd.force = args.force?
-      reinstall_cmd.run
-    end
+    return if casks.empty?
+
+    reinstall_cmd = Cask::Cmd::Reinstall.new(casks)
+    reinstall_cmd.verbose = args.verbose?
+    reinstall_cmd.force = args.force?
+    reinstall_cmd.run
   end
 end

Library/Homebrew/cmd/uninstall.rb

@@ -49,8 +49,8 @@ module Homebrew
         [rack, rack.subdirs.map { |d| Keg.new(d) }]
       end]
     else
-      _kegs, casks = args.kegs_casks
-      kegs_by_rack = _kegs.group_by(&:rack)
+      all_kegs, casks = args.kegs_casks
+      kegs_by_rack = all_kegs.group_by(&:rack)
     end
 
     handle_unsatisfied_dependents(kegs_by_rack)
@@ -128,7 +128,6 @@ module Homebrew
       cask_uninstall.verbose = args.verbose?
       cask_uninstall.run
     end
-
   rescue MultipleVersionsInstalledError => e
     ofail e
     puts "Run `brew uninstall --force #{e.name}` to remove all versions."