[gnome-maps] exportDialog: Don't expand preview vertically

[Jonas Danielsson <jonasdn src gnome org>]

commit 8cdde93296ac48c44dbf20ff0210658aa791e74e
Author: Damián Nohales <damiannohales gmail com>
Date:   Sun Jan 17 19:51:32 2016 -0300

    exportDialog: Don't expand preview vertically
    
    The export dialog drawing area was expanded vertically due to
    resize policy of the GtkAlignment parent, in those cases, we
    were drawing just a section of the drawing area, the undrawed
    section was shown with an ugly black background.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=760760

 data/ui/export-view-dialog.ui |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)
---
diff --git a/data/ui/export-view-dialog.ui b/data/ui/export-view-dialog.ui
index 092c718..91ba715 100644
--- a/data/ui/export-view-dialog.ui
+++ b/data/ui/export-view-dialog.ui
@@ -65,7 +65,8 @@
               <object class="GtkAlignment" id="alignment">
                 <property name="visible">True</property>
                 <property name="can_focus">False</property>
-                <property name="vexpand">True</property>
+                <property name="vexpand">False</property>
+                <property name="valign">start</property>
                 <child>
                   <object class="GtkFrame" id="frame">
                     <property name="visible">True</property>