[virt-tools-list] [virt-viewer 1/2] build-sys: Always prepend '-' to buildid

[Christophe Fergeau]

This was added in commit 3232ddb and mistakenly removed in 28a6bd6
Without this added dash, remote-viewer --version gives something like
"3.01" with a '1' buildid.
---
 configure.ac | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/configure.ac b/configure.ac
index c99378b..ef13477 100644
--- a/configure.ac
+++ b/configure.ac
@@ -232,7 +232,7 @@ fi
 
 AC_ARG_WITH([buildid],
     AS_HELP_STRING([--with-buildid=id], [Set additional build version details]),
-    [buildid="$with_buildid"], [buildid="0"])
+    [buildid="-$with_buildid"], [buildid="0"])
 AC_DEFINE_UNQUOTED([BUILDID], "$buildid", [Build version details])
 AC_SUBST([BUILDID], "$buildid")
 
-- 
2.4.2