tests: use 'test_must_be_empty' instead of 'test_cmp <empty> <out>'

diff --git a/GIT-VERSION-GEN b/GIT-VERSION-GEN
index bdd758e40951273e71bbae2fd69c2104c85cfd3d..920678a14b8ce28c50b5769fcf0bba022798b6ae 100755 (executable)
--- a/GIT-VERSION-GEN
+++ b/GIT-VERSION-GEN
@@ -1,7 +1,7 @@
 #!/bin/sh
 
 GVF=GIT-VERSION-FILE
-DEF_VER=v2.18.0-rc0
+DEF_VER=v2.18.GIT
 
 LF='
 '