Minor change to avoid compiler warning in gcc.

8b5a7f66 · Davis King · 06dd40d3 · 8b5a7f66
Commit 8b5a7f66 authored May 21, 2011 by Davis King
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type_safe_union_kernel.h dlib/type_safe_union/type_safe_union_kernel.h +1 -1

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--- a/dlib/type_safe_union/type_safe_union_kernel.h
+++ b/dlib/type_safe_union/type_safe_union_kernel.h
@@ -67,7 +67,7 @@ namespace dlib
        template <typename T>
        void invoke_on (
-            T& obj,
+            T& ,
            _void 
        ) const
        {