[gnome-calculator] Use margin for popover row labels (#76)

[Robert Roth <robertroth src gnome org>]

commit 73548dc68eebee1c5406c6bf2a2bf2cbb736dc92
Author: Robert Roth <robert roth off gmail com>
Date:   Thu Oct 4 21:26:56 2018 +0300

    Use margin for popover row labels (#76)

 src/math-function-popover.vala | 1 +
 src/math-variable-popover.vala | 1 +
 2 files changed, 2 insertions(+)
---
diff --git a/src/math-function-popover.vala b/src/math-function-popover.vala
index e44c1846..f2d1ea09 100644
--- a/src/math-function-popover.vala
+++ b/src/math-function-popover.vala
@@ -162,6 +162,7 @@ public class MathFunctionPopover : Gtk.Popover
             expression = "(%s)".printf (string.joinv (";", function.arguments));
 
         var label = new Gtk.Label ("<b>%s</b>%s".printf (function.name, expression));
+        label.set_margin_start (6);
         label.set_use_markup (true);
         label.halign = Gtk.Align.START;
         hbox.pack_start (label, true, true, 0);
diff --git a/src/math-variable-popover.vala b/src/math-variable-popover.vala
index 776c96b9..1c387865 100644
--- a/src/math-variable-popover.vala
+++ b/src/math-variable-popover.vala
@@ -136,6 +136,7 @@ public class MathVariablePopover : Gtk.Popover
             text = "<b>%s</b>".printf (name);
 
         var label = new Gtk.Label (text);
+        label.set_margin_start (6);
         label.set_use_markup (true);
         label.halign = Gtk.Align.START;
         hbox.pack_start (label, true, true, 0);