Changed slightly to avoid warning from gcc.

--HG--
extra : convert_revision : svn%3Afdd8eb12-d10e-0410-9acb-85c331704f74/trunk%403293

dlib/test/blas_bindings/blas_bindings_dot.cpp

@@ -131,7 +131,7 @@ namespace
 
         template <typename matrix_type, typename cv_type, typename rv_type>
         void test_dot_stuff_conj(
-            matrix_type& m,
+            matrix_type& ,
             rv_type& rv,
             cv_type& cv
         ) const