[geary/wip/conversation-polish] Trivial code formatting cleanup

[Michael Gratton <mjog src gnome org>]

commit 2939b1e7abedafe0292924b53b25a3b3f2d8729b
Author: Michael Gratton <mike vee net>
Date:   Fri Feb 1 11:44:17 2019 +1100

    Trivial code formatting cleanup

 src/engine/api/geary-email.vala | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)
---
diff --git a/src/engine/api/geary-email.vala b/src/engine/api/geary-email.vala
index 1c62e9bf..296f55e0 100644
--- a/src/engine/api/geary-email.vala
+++ b/src/engine/api/geary-email.vala
@@ -51,7 +51,9 @@ public class Geary.Email : BaseObject {
      *
      * @see get_message
      */
-    public const Field REQUIRED_FOR_MESSAGE = Geary.Email.Field.HEADER | Geary.Email.Field.BODY;
+    public const Field REQUIRED_FOR_MESSAGE = (
+        Geary.Email.Field.HEADER | Geary.Email.Field.BODY
+    );
 
     /**
      * Specifies specific parts of an email message.