Fix GLPI #293569 : Unité 'm/s²' avec le paramètre 'diff'

apps/utils.py

@@ -581,7 +581,7 @@ def get_units(params, plot_channel):
             units = " m/s²"
         elif params["units"] == "DISP":
             units = " m"
-        elif params["units"] == "AUTO" and plot_channel[1] == "N":
+        elif params["units"] == "AUTO" and (plot_channel[1] == "N" or params['diff']):
             units = " m/s²"
     return units