Prevent crash

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

@@ -197,10 +197,10 @@ public class BoundaryCallbackMessages extends PagedList.BoundaryCallback<TupleMe
                         return;
                     }
 
-                    if (intf != null)
                     ApplicationEx.getMainHandler().post(new Runnable() {
                         @Override
                         public void run() {
+                            if (intf != null)
                                 intf.onLoading();
                         }
                     });
@@ -222,10 +222,10 @@ public class BoundaryCallbackMessages extends PagedList.BoundaryCallback<TupleMe
                 } catch (final Throwable ex) {
                     state.error = true;
                     Log.e("Boundary", ex);
-                    if (intf != null)
                     ApplicationEx.getMainHandler().post(new Runnable() {
                         @Override
                         public void run() {
+                            if (intf != null)
                                 intf.onException(ex);
                         }
                     });
@@ -237,17 +237,16 @@ public class BoundaryCallbackMessages extends PagedList.BoundaryCallback<TupleMe
                     crumb.put("free", Integer.toString(Log.getFreeMemMb()));
                     Log.breadcrumb("Boundary done", crumb);
 
-                    if (intf != null) {
                     final int f = found;
                     ApplicationEx.getMainHandler().post(new Runnable() {
                         @Override
                         public void run() {
+                            if (intf != null)
                                 intf.onLoaded(f);
                         }
                     });
                 }
             }
-            }
         });
     }