saga-2.1.1 dylib destructor fix

saga-2.1.1-dylib-fix.diff

diff --git a/src/modules_io/grid/io_grid/xyz.cpp b/src/modules_io/grid/io_grid/xyz.cpp
index 9b6dc3b..3efdaa1 100644
--- a/src/modules_io/grid/io_grid/xyz.cpp
+++ b/src/modules_io/grid/io_grid/xyz.cpp
@@ -173,6 +173,10 @@ bool CXYZ_Export::On_Execute(void)
 	return( false );
 }
 
+//---------------------------------------------------------
+CXYZ_Export::~CXYZ_Export(void)
+{}
+
 
 ///////////////////////////////////////////////////////////
 //														 //
diff --git a/src/modules_io/grid/io_grid/xyz.h b/src/modules_io/grid/io_grid/xyz.h
index ffbd194..33b62fd 100644
--- a/src/modules_io/grid/io_grid/xyz.h
+++ b/src/modules_io/grid/io_grid/xyz.h
@@ -86,6 +86,7 @@ class CXYZ_Export : public CSG_Module_Grid
 {
 public:
 	CXYZ_Export(void);
+	virtual ~CXYZ_Export(void);
 
 	virtual CSG_String		Get_MenuPath	(void)			{	return( _TL("R:Export") );	}