Fix cached captchas causing errors when we switch between captcha types.

src/Posting/Captcha.noscript.coffee

@@ -133,7 +133,7 @@ Captcha.noscript =
     if captcha = @captchas.shift()
       @count()
       $.set 'captchas', @captchas
-      {challenge: captcha.response, response: 'manual_challenge'}
+      captcha
     else if /\S/.test @nodes.input.value
       (cb) =>
         @submitCB = cb
@@ -149,15 +149,17 @@ Captcha.noscript =
   save: (token) ->
     delete @occupied
     @nodes.input.value = ''
+    captcha =
+      challenge: token
+      response:  'manual_challenge'
+      timeout:   @timeout
     if @submitCB
-      @submitCB {challenge: token, response: 'manual_challenge'}
+      @submitCB captcha
       delete @submitCB
       if @needed() then @reload() else @destroy()
     else
       $.forceSync 'captchas'
-      @captchas.push
-        response: token
-        timeout:  @timeout
+      @captchas.push captcha
       @count()
       $.set 'captchas', @captchas
       @reload()

src/Posting/Captcha.v1.coffee

@@ -135,16 +135,17 @@ Captcha.v1 =
   getOne: ->
     @clear()
     if captcha = @captchas.shift()
-      {challenge, response} = captcha
       @count()
       $.set 'captchas', @captchas
+      captcha
     else
-      challenge   = @nodes.img.alt
+      challenge = @nodes.img.alt
+      timeout   = @timeout
       if /\S/.test(response = @nodes.input.value)
         @destroy()
+        {challenge, response, timeout}
       else
-        return null
-    {challenge, response}
+        null
 
   save: ->
     return unless /\S/.test(response = @nodes.input.value)

src/Posting/Captcha.v2.coffee

@@ -169,7 +169,7 @@ Captcha.v2 =
     if captcha = @captchas.shift()
       $.set 'captchas', @captchas
       @count()
-      captcha.response
+      captcha
     else
       null
 

src/Posting/QR.coffee

@@ -680,7 +680,7 @@ QR =
           extra.form.append 'recaptcha_challenge_field', response.challenge
           extra.form.append 'recaptcha_response_field', response.response
         else
-          extra.form.append 'g-recaptcha-response', response
+          extra.form.append 'g-recaptcha-response', response.response
       QR.req = $.ajax "https://sys.4chan.org/#{g.BOARD}/post", options, extra
       QR.req.progress = '...'