Get rid of unsafe variables.

lib/pleroma/web/activity_pub/mrf/simple_policy.ex

@@ -17,9 +17,10 @@ defp check_media_removal(actor_info, object) do
     if actor_info.host in @media_removal do
       child_object = Map.delete(object["object"], "attachment")
       object = Map.put(object, "object", child_object)
-    end
-
       {:ok, object}
+    else
+      {:ok, object}
+    end
   end
 
   @media_nsfw Keyword.get(@mrf_policy, :media_nsfw)
@@ -32,9 +33,10 @@ defp check_media_nsfw(actor_info, object) do
       child_object = Map.put(child_object, "tags", tags)
       child_object = Map.put(child_object, "sensitive", true)
       object = Map.put(object, "object", child_object)
-    end
-
       {:ok, object}
+    else
+      {:ok, object}
+    end
   end
 
   @ftl_removal Keyword.get(@mrf_policy, :federated_timeline_removal)
@@ -43,6 +45,7 @@ defp check_ftl_removal(actor_info, object) do
       user = User.get_by_ap_id(object["actor"])
 
       # flip to/cc relationship to make the post unlisted
+      object =
         if "https://www.w3.org/ns/activitystreams#Public" in object["to"] and
              user.follower_address in object["cc"] do
           to =
@@ -53,12 +56,17 @@ defp check_ftl_removal(actor_info, object) do
             List.delete(object["cc"], user.follower_address) ++
               ["https://www.w3.org/ns/activitystreams#Public"]
 
-        object = Map.put(object, "to", to)
+          object
-        object = Map.put(object, "cc", cc)
+          |> Map.put("to", to)
-      end
+          |> Map.put("cc", cc)
+        else
+          object
         end
 
       {:ok, object}
+    else
+      {:ok, object}
+    end
   end
 
   def filter(object) do

lib/pleroma/web/activity_pub/transmogrifier.ex

@@ -72,8 +72,11 @@ def fix_emoji(object) do
       |> Enum.reduce(%{}, fn data, mapping ->
         name = data["name"]
 
+        name =
           if String.starts_with?(name, ":") do
             name = name |> String.slice(1..-2)
+          else
+            name
           end
 
         mapping |> Map.put(name, data["icon"]["url"])

lib/pleroma/web/activity_pub/views/user_view.ex

@@ -123,8 +123,11 @@ def render("outbox.json", %{user: user, max_id: max_qid}) do
       "limit" => "10"
     }
 
+    params =
       if max_qid != nil do
-      params = Map.put(params, "max_id", max_qid)
+        Map.put(params, "max_id", max_qid)
+      else
+        params
       end
 
     activities = ActivityPub.fetch_public_activities(params)

lib/pleroma/web/mastodon_api/mastodon_api_controller.ex

@@ -212,11 +212,11 @@ def user_statuses(%{assigns: %{user: user}} = conn, params) do
         |> Map.put("actor_id", ap_id)
         |> Map.put("whole_db", true)
 
+      activities =
         if params["pinned"] == "true" do
           # Since Pleroma has no "pinned" posts feature, we'll just set an empty list here
-        activities = []
+          []
         else
-        activities =
           ActivityPub.fetch_public_activities(params)
           |> Enum.reverse()
         end

lib/pleroma/web/web_finger/web_finger.ex

@@ -239,12 +239,13 @@ def finger(account) do
           URI.parse(account).host
       end
 
+    address =
       case find_lrdd_template(domain) do
         {:ok, template} ->
-        address = String.replace(template, "{uri}", URI.encode(account))
+          String.replace(template, "{uri}", URI.encode(account))
 
         _ ->
-        address = "http://#{domain}/.well-known/webfinger?resource=acct:#{account}"
+          "http://#{domain}/.well-known/webfinger?resource=acct:#{account}"
       end
 
     with response <-