Add version to make-relative-copies regtest for GUB build

diff --git a/input/regression/make-relative-copies.ly b/input/regression/make-relative-copies.ly
index 93c9fe9c8e11ce20c0568d9aa2f5f4c7cba07aae..926de581b916c9b11c4d5d522b7d1e78720a6e69 100644 (file)
--- a/input/regression/make-relative-copies.ly
+++ b/input/regression/make-relative-copies.ly
@@ -1,3 +1,5 @@
+\version "2.18.0"
+
 \header {
   texidoc = "@code{make-relative} has to copy its argument expressions
 in case the generated music expression is getting copied and modified.