[geary/wip/730682-refine-convo-list: 29/37] Fix a build warning.

[Michael Gratton <mjog src gnome org>]

commit 4ff6b3c089766a3ae5f6f61aa41b487dcf5da82c
Author: Michael James Gratton <mike vee net>
Date:   Mon Dec 11 16:08:24 2017 +1100

    Fix a build warning.

 .../conversation-list/conversation-list.vala       |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/src/client/conversation-list/conversation-list.vala 
b/src/client/conversation-list/conversation-list.vala
index 4692c3a..80b4525 100644
--- a/src/client/conversation-list/conversation-list.vala
+++ b/src/client/conversation-list/conversation-list.vala
@@ -12,7 +12,7 @@
 public class ConversationList : Gtk.ListBox {
 
 
-    private const string CLASS = "geary-conversation-list";
+    private const string LIST_CLASS = "geary-conversation-list";
 
 
     /** Underlying model for this list */
@@ -43,7 +43,7 @@ public class ConversationList : Gtk.ListBox {
 
     public ConversationList(Configuration config) {
         this.config = config;
-        get_style_context().add_class(CLASS);
+        get_style_context().add_class(LIST_CLASS);
         set_activate_on_single_click(true);
         set_selection_mode(Gtk.SelectionMode.SINGLE);