Update testing nms package

modules/API/src/main/java/com/comphenix/protocol/utility/Constants.java

@@ -21,7 +21,7 @@ package com.comphenix.protocol.utility;
  */
 
 public final class Constants {
-	public static final String PACKAGE_VERSION = "v1_13_R1";
+	public static final String PACKAGE_VERSION = "v1_13_R2";
 	public static final String NMS = "net.minecraft.server." + PACKAGE_VERSION;
 	public static final String OBC = "org.bukkit.craftbukkit." + PACKAGE_VERSION;
 }

modules/ProtocolLib/src/test/java/com/comphenix/protocol/events/PacketContainerTest.java

@@ -575,7 +575,7 @@ public class PacketContainerTest {
 				return;
 			}
 		} else {
-			if (a.equals(b) || Objects.equals(a, b) || a.toString().equals(b.toString())) {
+			if (a.equals(b) || Objects.equals(a, b) || stringEquality(a, b)) {
 				return;
 			}
 		}
@@ -587,6 +587,15 @@ public class PacketContainerTest {
 		assertEquals(a, b);
 	}
 
+	private boolean stringEquality(Object a, Object b) {
+		try {
+			return a.toString().equals(b.toString());
+		} catch (Exception ex) {
+			// internal null pointers, usually
+			return false;
+		}
+	}
+
 	/**
 	 * Get the underlying array as an object array.
 	 * @param val - array wrapped as an Object.