Fix double GZIP decompression

SpigotCore_18/src/de/steamwar/core/WorldEditWrapper18.java

@@ -19,8 +19,10 @@
 
 package de.steamwar.core;
 
+import com.fastasyncworldedit.core.extent.clipboard.io.FastSchematicReader;
+import com.sk89q.jnbt.NBTInputStream;
 import com.sk89q.worldedit.extent.clipboard.Clipboard;
-import com.sk89q.worldedit.extent.clipboard.io.BuiltInClipboardFormat;
+import com.sk89q.worldedit.extent.clipboard.io.MCEditSchematicReader;
 import de.steamwar.sql.NoClipboardException;
 
 import java.io.IOException;
@@ -29,14 +31,12 @@ import java.io.InputStream;
 public class WorldEditWrapper18 extends WorldEditWrapper14 {
 
     @Override
+    @SuppressWarnings("removal")
     public Clipboard getClipboard(InputStream is, boolean schemFormat) throws IOException {
         //Use FAWE reader due to FAWE capability of reading corrupt FAWE schems
+        NBTInputStream nbtStream = new NBTInputStream(is);
         try {
-            if(schemFormat){
-                return BuiltInClipboardFormat.FAST.load(is);
-            }else{
-                return BuiltInClipboardFormat.MCEDIT_SCHEMATIC.load(is);
-            }
+            return (schemFormat ? new FastSchematicReader(nbtStream) : new MCEditSchematicReader(nbtStream)).read();
         } catch (NullPointerException e) {
             throw new NoClipboardException();
         }