Fixed variable naming

src/Discord.Net.Core/Extensions/GuildUserExtensions.cs

@@ -21,12 +21,11 @@ namespace Discord
             return user.RoleIds.Select(r => guild.GetRole(r));
         }
 
-        public static int CompareRoles(this IGuildUser u1, IGuildUser u2) {
+        public static int CompareRoles(this IGuildUser left, IGuildUser right) {
             // These should never be empty since the everyone role is always present
-            var r1 = u1.GetRoles().Max();
-            var r2 = u2.GetRoles().Max();
-            var result = r1.CompareTo(r2);
-            return result != 0 ? result : u1.Id.CompareTo(u2.Id);
+            var roleLeft = left.GetRoles().Max();
+            var roleRight= right.GetRoles().Max();
+            return roleLeft.CompareTo(roleRight);
         }
 
         public static int Compare(this IGuildUser user, IRole role) {

src/Discord.Net.Core/Extensions/RoleExtensions.cs

@@ -6,14 +6,16 @@ namespace Discord
 {
   public static class RoleExtensions
   {
-    internal static int Compare(this IRole r1, IRole r2) {
-      if(r2 == null)
+    internal static int Compare(this IRole left, IRole right) {
+      if(left == null)
+        return -1;
+      if(right == null)
         return 1;
-      var result = r1.Position.CompareTo(r2.Position);
+      var result = left.Position.CompareTo(right.Position);
       // As per Discord's documentation, a tie is broken by ID
       if(result != 0)
         return result;
-      return r1.Id.CompareTo(r2.Id);
+      return left.Id.CompareTo(right.Id);
     }
   }
 }