[gnome-tetravex] Add translators comments.

[Arnaud B. <arnaudb src gnome org>]

commit 7e57766a02ab8353f7fce433452007994d13d3c0
Author: Arnaud Bonatti <arnaud bonatti gmail com>
Date:   Tue Oct 15 18:45:35 2019 +0200

    Add translators comments.

 src/puzzle.vala      | 2 +-
 src/score-overlay.ui | 2 ++
 2 files changed, 3 insertions(+), 1 deletion(-)
---
diff --git a/src/puzzle.vala b/src/puzzle.vala
index 1b6ba1e..a5947bd 100644
--- a/src/puzzle.vala
+++ b/src/puzzle.vala
@@ -315,7 +315,7 @@ private class Puzzle : Object
     * * moving tiles
     \*/
 
-    uint last_move_id = 0;
+    private uint last_move_id = 0;
 
     private inline void switch_one_of_many_tiles (uint8 x0, uint8 y0, uint8 x1, uint8 y1)
     {
diff --git a/src/score-overlay.ui b/src/score-overlay.ui
index d7140d1..4dd1b5d 100644
--- a/src/score-overlay.ui
+++ b/src/score-overlay.ui
@@ -33,6 +33,7 @@
       <object class="GtkLabel">
         <property name="visible">True</property>
         <property name="hexpand">True</property>
+        <!-- Translators: text of the score overlay, displayed after a puzzle is complete -->
         <property name="label" translatable="yes">Congratulations!</property>
         <style>
           <class name="score-title"/>
@@ -73,6 +74,7 @@
         <property name="visible">True</property>
         <property name="halign">center</property>
         <property name="valign">center</property>
+        <!-- Translators: label of a button of the score overlay, displayed after a puzzle is complete; 
opens Scores dialog -->
         <property name="label" translatable="yes">Show scores</property>
         <property name="action-name">app.scores</property>
         <property name="focus-on-click">False</property>