From 9d82d822dbde51516973407b80a9255d55ba7087 Mon Sep 17 00:00:00 2001
From: cpw <cpw+github@weeksfamily.ca>
Date: Sat, 20 Jul 2019 19:37:54 -0400
Subject: [PATCH] Fix error when ModsDiscoverer visits a non existent mods dir.

Closes cpw/modlauncher#30

Signed-off-by: cpw <cpw+github@weeksfamily.ca>
---
 .../fml/loading/ModDirTransformerDiscoverer.java             | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/fmllauncher/java/net/minecraftforge/fml/loading/ModDirTransformerDiscoverer.java b/src/fmllauncher/java/net/minecraftforge/fml/loading/ModDirTransformerDiscoverer.java
index 81bdf7795..0df64f48c 100644
--- a/src/fmllauncher/java/net/minecraftforge/fml/loading/ModDirTransformerDiscoverer.java
+++ b/src/fmllauncher/java/net/minecraftforge/fml/loading/ModDirTransformerDiscoverer.java
@@ -28,6 +28,7 @@ import java.io.IOException;
 import java.nio.file.Files;
 import java.nio.file.Path;
 import java.util.ArrayList;
+import java.util.Collections;
 import java.util.List;
 import java.util.zip.ZipFile;
 
@@ -35,6 +36,10 @@ public class ModDirTransformerDiscoverer implements ITransformerDiscoveryService
     @Override
     public List<Path> candidates(final Path gameDirectory) {
         final Path modsDir = gameDirectory.resolve(FMLPaths.MODSDIR.relative());
+        if (!Files.exists(modsDir)) {
+            // Skip if the mods dir doesn't exist yet.
+            return Collections.emptyList();
+        }
         List<Path> paths = new ArrayList<>();
         try {
             Files.createDirectories(modsDir);