Fix -Wnon-virtual-dtor compiler warnings.

core/include/fxge/fx_ge.h

Index: core/include/fxge/fx_ge.h
diff --git a/core/include/fxge/fx_ge.h b/core/include/fxge/fx_ge.h
index 82719ffda603e2f60b287258cfca86066fe3c658..0c4bce800310494c0acccf41092f32b64bca011a 100644
--- a/core/include/fxge/fx_ge.h
+++ b/core/include/fxge/fx_ge.h
@@ -637,9 +637,11 @@ public:
 class IFX_PSOutput
 {
 public:
-
-    virtual void	OutputPS(FX_LPCSTR string, int len) = 0;
     virtual void  Release() = 0;

[brucedawson, 2015/01/09 00:20:49]

Are there any binary compatibility issues from reordering these? i.e.; are there
ever any cases where the two sides of the interface are not updated
simultaneously? I assume not, but just checking.

[Tom Sepez, 2015/01/09 01:16:53]

There's one cast but its not suspicious - in fx_win32_print.cpp:298 - looks
unnecessary.  Otherwise, I didn't see any casts to ifx_psoutput, and just the
one derived class.

+    virtual void	OutputPS(FX_LPCSTR string, int len) = 0;
+
+protected:
+    ~IFX_PSOutput() { }
 };
 class CPSFont;
 class CFX_PSRenderer : public CFX_Object