Make Parser#parse return args.

Library/Homebrew/cli/parser.rb

@@ -171,7 +171,7 @@ module Homebrew
         Homebrew.args = @args
 
         @args_parsed = true
-        @parser
+        @args
       end
 
       def global_option?(name, desc)

Library/Homebrew/dev-cmd/mirror.rb

@@ -27,7 +27,7 @@ module Homebrew
   end
 
   def mirror
-    mirror_args.parse
+    args = mirror_args.parse
 
     bintray_org = args.bintray_org || "homebrew"
     bintray_repo = args.bintray_repo || "mirror"

Library/Homebrew/dev-cmd/pr-upload.rb

@@ -33,7 +33,7 @@ module Homebrew
   end
 
   def pr_upload
-    pr_upload_args.parse
+    args = pr_upload_args.parse
 
     bintray_org = args.bintray_org || "homebrew"
     bintray = Bintray.new(org: bintray_org)