Convert SkipOutputStream to Kotlin

This commit also changes the skipBytes logic slightly to avoid the need
to modify the off/len arguments, which is not possible in Kotlin.

util/src/main/java/dev/openrs2/util/io/SkipOutputStream.java

@@ -1,37 +0,0 @@
-package dev.openrs2.util.io;
-
-import java.io.FilterOutputStream;
-import java.io.IOException;
-import java.io.OutputStream;
-
-public final class SkipOutputStream extends FilterOutputStream {
-	private long skipBytes;
-
-	public SkipOutputStream(OutputStream out, long skipBytes) {
-		super(out);
-		this.skipBytes = skipBytes;
-	}
-
-	@Override
-	public void write(int b) throws IOException {
-		if (skipBytes == 0) {
-			super.write(b);
-		} else {
-			skipBytes--;
-		}
-	}
-
-	@Override
-	public void write(byte[] b, int off, int len) throws IOException {
-		if (len >= skipBytes) {
-			off += skipBytes;
-			len -= skipBytes;
-			skipBytes = 0;
-		} else {
-			skipBytes -= len;
-			return;
-		}
-
-		super.write(b, off, len);
-	}
-}

util/src/main/java/dev/openrs2/util/io/SkipOutputStream.kt

@@ -0,0 +1,23 @@
+package dev.openrs2.util.io
+
+import java.io.FilterOutputStream
+import java.io.OutputStream
+
+class SkipOutputStream(out: OutputStream, private var skipBytes: Long) : FilterOutputStream(out) {
+    override fun write(b: Int) {
+        if (skipBytes == 0L) {
+            super.write(b)
+        } else {
+            skipBytes--
+        }
+    }
+
+    override fun write(b: ByteArray, off: Int, len: Int) {
+        if (len >= skipBytes) {
+            super.write(b, off + skipBytes.toInt(), len - skipBytes.toInt())
+            skipBytes = 0
+        } else {
+            skipBytes -= len
+        }
+    }
+}