Fix `filenames` issue

src/main/java/emu/grasscutter/data/DataLoader.java

@@ -6,11 +6,11 @@ import emu.grasscutter.tools.Tools;
 import emu.grasscutter.utils.FileUtils;
 import emu.grasscutter.utils.Utils;
 
-import java.io.*;
-import java.nio.file.FileSystems;
+import java.io.FileInputStream;
+import java.io.FileNotFoundException;
+import java.io.InputStream;
 import java.nio.file.Path;
 import java.util.List;
-import java.util.regex.Pattern;
 
 import static emu.grasscutter.Configuration.DATA;
 
@@ -18,10 +18,11 @@ public class DataLoader {
 
     /**
      * Load a data file by its name. If the file isn't found within the /data directory then it will fallback to the default within the jar resources
-     * @see #load(String, boolean)
+     *
      * @param resourcePath The path to the data file to be loaded.
      * @return InputStream of the data file.
      * @throws FileNotFoundException
+     * @see #load(String, boolean)
      */
     public static InputStream load(String resourcePath) throws FileNotFoundException {
         return load(resourcePath, true);
@@ -29,6 +30,7 @@ public class DataLoader {
 
     /**
      * Load a data file by its name.
+     *
      * @param resourcePath The path to the data file to be loaded.
      * @param useFallback  If the file does not exist in the /data directory, should it use the default file in the jar?
      * @return InputStream of the data file.
@@ -52,7 +54,7 @@ public class DataLoader {
             List<Path> filenames = FileUtils.getPathsFromResource("/defaults/data/");
 
             if (filenames == null) {
-            	Grasscutter.getLogger().error("We were unable to locate your default data files.");
+                Grasscutter.getLogger().error("We were unable to locate your default data files."); return;
             }
 
             for (Path file : filenames) {