submodule.c: report the submodule that an error occurs in

diff --git a/GIT-VERSION-GEN b/GIT-VERSION-GEN
index c1906f0fd1588ebb296f80b478f138dab4dc7c5a..f6c7db07e63c0036d12dc3e0a655ab50758fb329 100755 (executable)
--- a/GIT-VERSION-GEN
+++ b/GIT-VERSION-GEN
@@ -1,7 +1,7 @@
 #!/bin/sh
 
 GVF=GIT-VERSION-FILE
-DEF_VER=v2.15.GIT
+DEF_VER=v2.16.4
 
 LF='
 '