[gnome-photos] thumbnail-factory: Don't leak the thumbnailer path string

[Debarshi Ray <debarshir src gnome org>]

commit c8f2f139470b538c39e3988a479137a3b3d0b0f3
Author: Debarshi Ray <debarshir gnome org>
Date:   Mon Jan 1 14:14:46 2018 +0100

    thumbnail-factory: Don't leak the thumbnailer path string

 src/photos-thumbnail-factory.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)
---
diff --git a/src/photos-thumbnail-factory.c b/src/photos-thumbnail-factory.c
index bc845009..522c5221 100644
--- a/src/photos-thumbnail-factory.c
+++ b/src/photos-thumbnail-factory.c
@@ -440,13 +440,15 @@ photos_thumbnail_factory_generate_thumbnail (PhotosThumbnailFactory *self,
                                      "--address",
                                      address,
                                      NULL);
+
+      g_free (thumbnailer_path);
+
       if (local_error != NULL)
         goto out;
 
       g_mutex_unlock (&self->mutex_connection);
       mutex_connection_unlocked = TRUE;
 
-      g_free (thumbnailer_path);
       g_object_unref (subprocess);
     }