Fix BinaryTree skip, small otb changes

src/framework/core/binarytree.cpp

@@ -111,6 +111,12 @@ void BinaryTree::seek(uint pos)
     m_pos = pos;
 }
 
+void BinaryTree::skip(uint len)
+{
+    unserialize();
+    seek(tell() + len);
+}
+
 uint8 BinaryTree::getU8()
 {
     unserialize();

src/framework/core/binarytree.h

@@ -39,7 +39,7 @@ public:
     ~BinaryTree();
 
     void seek(uint pos);
-    void skip(uint len) { seek(tell() + len); }
+    void skip(uint len);
     uint tell() { return m_pos; }
     uint size() { unserialize(); return m_buffer.size(); }