Installer#reinstall instead of #install :reinstall

Call an explicit method on Installer to reinstall rather than using a
flag to indicate when we're reinstalling a cask

Library/Homebrew/cask/lib/hbc/cli/reinstall.rb

@@ -10,8 +10,7 @@ module Hbc
             Installer.new(cask,
                           force:          force,
                           skip_cask_deps: skip_cask_deps,
-                          require_sha:    require_sha,
-                          reinstall:      true).install
+                          require_sha:    require_sha).reinstall
 
             count += 1
           rescue CaskUnavailableError => e

Library/Homebrew/cask/lib/hbc/installer.rb

@@ -18,13 +18,13 @@ module Hbc
 
     PERSISTENT_METADATA_SUBDIRS = ["gpg"].freeze
 
-    def initialize(cask, command: SystemCommand, force: false, skip_cask_deps: false, require_sha: false, reinstall: false)
+    def initialize(cask, command: SystemCommand, force: false, skip_cask_deps: false, require_sha: false)
       @cask = cask
       @command = command
       @force = force
       @skip_cask_deps = skip_cask_deps
       @require_sha = require_sha
-      @reinstall = reinstall
+      @reinstall = false
     end
 
     def self.print_caveats(cask)
@@ -94,6 +94,12 @@ module Hbc
       puts summary
     end
 
+    def reinstall
+      odebug "Hbc::Installer#reinstall"
+      @reinstall = true
+      install
+    end
+
     def uninstall_if_neccessary
       return unless @cask.installed? && @reinstall
       installed_cask = @cask