From e8c5f3a882d4f6cc6384bc073b557b1b862882e3 Mon Sep 17 00:00:00 2001
From: pekspro <msn@pekspro.com>
Date: Fri, 12 Jun 2020 20:42:13 +0200
Subject: [PATCH] Fixes null reference exception. (#3436)

---
 .../launcher/Plugins/Microsoft.Plugin.Calculator/Main.cs    | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/modules/launcher/Plugins/Microsoft.Plugin.Calculator/Main.cs b/src/modules/launcher/Plugins/Microsoft.Plugin.Calculator/Main.cs
index 5acc58a65e..4fafcbd3c8 100644
--- a/src/modules/launcher/Plugins/Microsoft.Plugin.Calculator/Main.cs
+++ b/src/modules/launcher/Plugins/Microsoft.Plugin.Calculator/Main.cs
@@ -38,6 +38,12 @@ namespace Microsoft.Plugin.Calculator
             {
                 var result = MagesEngine.Interpret(query.Search);
 
+                // This could happen for some incorrect queries, like pi(2) 
+                if(result == null)
+                {
+                    return new List<Result>();
+                }
+
                 if (result.ToString() == "NaN")
                     result = Context.API.GetTranslation("wox_plugin_calculator_not_a_number");