Always get the revision_count

We provide the revision_count via the MS API, so should always try to fetch it. Doing so is
already a dependency to autoflagging, so doing it earlier doesn't change if we autoflag.
Fetching it earlier saves us the work of processing the flagging conditions for the cases
where the number of revisions disqualifies the post.

app/models/concerns/post_concerns/autoflagging.rb

@@ -9,14 +9,23 @@ module PostConcerns::Autoflagging
 
     def autoflag
       Rails.logger.warn "[autoflagging] #{id}: Post#autoflag begin"
-      return 'Duplicate post' unless Post.where(link: link).count == 1
-      return 'Flagging disabled' unless FlagSetting['flagging_enabled'] == '1'
-      Rails.logger.warn "[autoflagging] #{id}: not a dupe"
 
-      dry_run = FlagSetting['dry_run'] == '1'
       post = self
-
       begin
+        Rails.logger.warn "[autoflagging] #{id}: before revision count"
+        post.fetch_revision_count
+        unless post.revision_count == 1
+          Rails.logger.warn "[autoflagging] #{id}: vandalized"
+          post.send_not_autoflagged
+          return 'More than one revision'
+        end
+
+        return 'Duplicate post' unless Post.where(link: link).count == 1
+        return 'Flagging disabled' unless FlagSetting['flagging_enabled'] == '1'
+        Rails.logger.warn "[autoflagging] #{id}: not a dupe"
+
+        dry_run = FlagSetting['dry_run'] == '1'
+
         conditions = post.site.flag_conditions.where(flags_enabled: true)
         available_user_ids = {}
         conditions.each do |condition|
@@ -34,14 +43,6 @@ def autoflag
           return 'No users eligible to flag'
         end
 
-        Rails.logger.warn "[autoflagging] #{id}: before revision count"
-        post.fetch_revision_count
-        unless post.revision_count == 1
-          Rails.logger.warn "[autoflagging] #{id}: vandalized"
-          post.send_not_autoflagged
-          return 'More than one revision'
-        end
-
         Rails.logger.warn "[autoflagging] #{id}: lottery begin"
 
         # Defined by the scaled_max_flags FlagSetting