Use var instead of explicit type

Also prevent future issues

src/.editorconfig

@@ -147,6 +147,9 @@ dotnet_diagnostic.RS2008.severity = none
 # IDE0005: Remove unnecessary import
 dotnet_diagnostic.IDE0005.severity = warning
 
+# IDE0007: Use `var` instead of explicit type
+dotnet_diagnostic.IDE0007.severity = warning
+
 # IDE0035: Remove unreachable code
 dotnet_diagnostic.IDE0035.severity = warning
 

src/Impostor.Server/Net/Inner/Objects/InnerPlayerControl.cs

@@ -427,7 +427,7 @@ namespace Impostor.Server.Net.Inner.Objects
                     var i = 1;
                     while (true)
                     {
-                        string text = expected + " " + i;
+                        var text = expected + " " + i;
 
                         if (Game.Players.All(x => x.Character == null || x.Character == this || x.Character.PlayerInfo.PlayerName != text))
                         {