[gnome-photos] operation-insta-filter: Style fix

[Debarshi Ray <debarshir src gnome org>]

commit 676265f04ac87c592be2e47e768ac9eaac87401d
Author: Debarshi Ray <debarshir gnome org>
Date:   Mon Dec 11 00:28:55 2017 +0100

    operation-insta-filter: Style fix

 src/photos-operation-insta-filter.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/src/photos-operation-insta-filter.c b/src/photos-operation-insta-filter.c
index 657e144..9c000c8 100644
--- a/src/photos-operation-insta-filter.c
+++ b/src/photos-operation-insta-filter.c
@@ -150,7 +150,7 @@ photos_operation_insta_filter_set_preset (PhotosOperationInstaFilter *self, Phot
     return;
 
   self->preset = preset;
-  if (self->input != NULL)
+  if (GEGL_OPERATION (self)->node != NULL)
     photos_operation_insta_filter_setup (self);
 }