storage: do unavailable guild object rewrite earlier on

prevent unecessary db calls as soon as the guild is determined to be
unavailable

litecord/storage.py

@@ -180,6 +180,18 @@ class Storage:
 
         drow = dict(row)
 
+        # a guild's unavailable state is kept in memory, and we remove every
+        # other guild related field when its unavailable.
+        drow['unavailable'] = self.app.guild_store.get(
+            guild_id, 'unavailable', False)
+
+        if drow['unavailable']:
+            drow = {
+                'id': drow['id'],
+                'unavailable': True
+            }
+
+        # guild.owner is dependant of the user doing the get_guild call.
         if user_id:
             drow['owner'] = drow['owner_id'] == str(user_id)
 
@@ -192,17 +204,6 @@ class Storage:
         drow['max_presences'] = 1000
         drow['max_members'] = 1000
 
-        # a guild's unavailable state is kept in memory, and we remove every
-        # other guild related field when its unavailable.
-        drow['unavailable'] = self.app.guild_store.get(
-            guild_id, 'unavailable', False)
-
-        if drow['unavailable']:
-            drow = {
-                'id': drow['id'],
-                'unavailable': True
-            }
-
         return drow
 
     async def _member_basic(self, guild_id: int, member_id: int):