#3629: Fix scoreboard team data reading

protocol/src/main/java/net/md_5/bungee/protocol/Either.java

@@ -1,5 +1,6 @@
 package net.md_5.bungee.protocol;
 
+import java.util.function.Function;
 import lombok.AccessLevel;
 import lombok.AllArgsConstructor;
 import lombok.Data;
@@ -31,4 +32,26 @@ public final class Either<L, R>
     {
         return new Either<>( null, right );
     }
+
+    public L getLeftOrCompute(Function<R, L> function)
+    {
+        if ( isLeft() )
+        {
+            return left;
+        } else
+        {
+            return function.apply( right );
+        }
+    }
+
+    public R getRightOrCompute(Function<L, R> function)
+    {
+        if ( isRight() )
+        {
+            return right;
+        } else
+        {
+            return function.apply( left );
+        }
+    }
 }