Small improvement

app/src/main/java/eu/faircode/email/ServiceSynchronize.java

@@ -1359,12 +1359,10 @@ public class ServiceSynchronize extends LifecycleService {
 
             if (imessage.isExpunged()) {
                 Log.i(Helper.TAG, folder.name + " expunged uid=" + uid);
-                imessage.invalidateHeaders();
                 return 0;
             }
             if (imessage.isSet(Flags.Flag.DELETED)) {
                 Log.i(Helper.TAG, folder.name + " deleted uid=" + uid);
-                imessage.invalidateHeaders();
                 return 0;
             }
 
@@ -1471,9 +1469,6 @@ public class ServiceSynchronize extends LifecycleService {
                     message.write(context, helper.getHtml());
                     Log.i(Helper.TAG, folder.name + " added id=" + message.id + " uid=" + message.uid);
 
-                    // Free memory
-                    imessage.invalidateHeaders();
-
                     int sequence = 0;
                     for (EntityAttachment attachment : helper.getAttachments()) {
                         sequence++;
@@ -1497,6 +1492,9 @@ public class ServiceSynchronize extends LifecycleService {
             }
         } finally {
             //Log.v(Helper.TAG, folder.name + " end sync uid=" + uid);
+
+            // Free memory
+            imessage.invalidateHeaders();
         }
     }