Update test/gie/builtins.gie

jkrasting · rouault · web-flow · commit 39b64296fd67 · 2020-05-17T09:04:42.000-04:00
Co-authored-by: Even Rouault &lt;even.rouault@spatialys.com&gt;
diff --git a/test/gie/builtins.gie b/test/gie/builtins.gie
@@ -2195,6 +2195,7 @@ operation +proj=igh_o   +a=6400000
 tolerance 0.1 mm
 accept  2 1
 expect  223538.245169845 111701.072127637
+roundtrip 1
 accept  2 -1
 expect  223708.371313058 -111701.072127637
 accept  -2 1
