Addressing PR comments.

crates/api/src/post_report/create.rs

@@ -44,7 +44,6 @@ pub async fn create_post_report(
   )
   .await?;
 
-  // Don't allow creating reports for removed / deleted posts
   check_post_deleted_or_removed(&post_view.post)?;
 
   let report_form = PostReportForm {

crates/api_common/src/utils.rs

@@ -225,6 +225,7 @@ pub async fn check_community_mod_action(
   Ok(())
 }
 
+/// Don't allow creating reports for removed / deleted posts
 pub fn check_post_deleted_or_removed(post: &Post) -> Result<(), LemmyError> {
   if post.deleted || post.removed {
     Err(LemmyErrorType::Deleted)?

crates/apub/src/activities/community/report.rs

@@ -14,7 +14,7 @@ use activitypub_federation::{
   kinds::activity::FlagType,
   traits::{ActivityHandler, Actor},
 };
-use lemmy_api_common::context::LemmyContext;
+use lemmy_api_common::{context::LemmyContext, utils::check_post_deleted_or_removed};
 use lemmy_db_schema::{
   source::{
     activity::ActivitySendTargets,
@@ -104,6 +104,8 @@ impl ActivityHandler for Report {
     let reason = self.reason()?;
     match self.object.dereference(context).await? {
       PostOrComment::Post(post) => {
+        check_post_deleted_or_removed(&post)?;
+
         let report_form = PostReportForm {
           creator_id: actor.id,
           post_id: post.id,