ref_transaction_delete(): check that old_sha1 is not null_sha1

diff --git a/GIT-VERSION-GEN b/GIT-VERSION-GEN
index b313654fe3be49c08247d2d02ca1d0ac179bdcf7..780064ad7173fd5be40b3b5e419db5c3e53f96f2 100755 (executable)
--- a/GIT-VERSION-GEN
+++ b/GIT-VERSION-GEN
@@ -1,7 +1,7 @@
 #!/bin/sh
 
 GVF=GIT-VERSION-FILE
-DEF_VER=v2.1.4
+DEF_VER=v2.3.0
 
 LF='
 '