Change return type of KaitaiStream.pos() to long

Author: Mingun

src/main/java/io/kaitai/struct/ByteBufferKaitaiStream.java

@@ -192,7 +192,7 @@ public void seek(long newPos) {
     }
 
     @Override
-    public int pos() {
+    public long pos() {
         return bb.position();
     }
 

src/main/java/io/kaitai/struct/KaitaiStream.java

@@ -112,7 +112,7 @@ public abstract class KaitaiStream implements Closeable {
      * Get current position of a stream pointer.
      * @return pointer position, number of bytes from the beginning of the stream
      */
-    abstract public int pos();
+    abstract public long pos();
 
     /**
      * Get total size of the stream in bytes.

src/main/java/io/kaitai/struct/RandomAccessFileKaitaiStream.java

@@ -86,10 +86,9 @@ public void seek(long newPos) {
     }
 
     @Override
-    public int pos() {
+    public long pos() {
         try {
-            // FIXME cast
-            return (int) raf.getFilePointer();
+            return raf.getFilePointer();
         } catch (IOException e) {
             throw new RuntimeException(e);
         }