[gnome-shell] dateMenu: Fix temperature edge case

[Marge Bot <marge-bot src gnome org>]

commit e85d127ae3851099cb6481ec6f0487a3661745a7
Author: Florian Müllner <fmuellner gnome org>
Date:   Sun Dec 20 23:11:26 2020 +0100

    dateMenu: Fix temperature edge case
    
    We currently format the temperature with a precision of 0, that is
    with no digits after the decimal-point. As a result, a temperature
    like -0.2 shows up as -0.
    
    Math.trunc() has the same effect as `%.0f` and handles that edge
    case correctly, but while at it, we can just as well round the
    value properly.
    
    https://gitlab.gnome.org/GNOME/gnome-shell/-/issues/3441
    
    Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1548>

 js/ui/dateMenu.js | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/js/ui/dateMenu.js b/js/ui/dateMenu.js
index 993d492896..33c054c12f 100644
--- a/js/ui/dateMenu.js
+++ b/js/ui/dateMenu.js
@@ -567,7 +567,7 @@ class WeatherSection extends St.Button {
                 ampm: false,
             });
             const [, tempValue] = fc.get_value_temp(GWeather.TemperatureUnit.DEFAULT);
-            const tempPrefix = tempValue >= 0 ? ' ' : '';
+            const tempPrefix = Math.round(tempValue) >= 0 ? ' ' : '';
 
             let time = new St.Label({
                 style_class: 'weather-forecast-time',
@@ -582,7 +582,7 @@ class WeatherSection extends St.Button {
             });
             let temp = new St.Label({
                 style_class: 'weather-forecast-temp',
-                text: '%s%.0f°'.format(tempPrefix, tempValue),
+                text: '%s%d°'.format(tempPrefix, Math.round(tempValue)),
                 x_align: Clutter.ActorAlign.CENTER,
             });