[OSSTEST PATCH 3/9] config: Tiny fixes

[Ian Jackson <ian.jackson@eu.citrix.com>]

* Default $c{DebianPreseed} to '' (previously, if it wasn't specified,
  there would be undefined variable warnings).

* Cope with empty <<END-notated config items in the configuration file
  parser.

Signed-off-by: Ian Jackson <Ian.Jackson@eu.citrix.com>
---
 Osstest.pm |    4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/Osstest.pm b/Osstest.pm
index fc9698b..6d7c083 100644
--- a/Osstest.pm
+++ b/Osstest.pm
@@ -74,6 +74,8 @@ our %c = qw(
     DebianNonfreeFirmware firmware-bnx2
 );
 
+$c{DebianPreseed} = '';
+
 #---------- general setup and config reading ----------
 
 sub getmethod {
@@ -120,7 +122,7 @@ sub readglobalconfig () {
 			$val .= $_;
 		    }
 		    die $! unless length $_;
-		    die unless $val =~ m/\n$/;
+		    die unless !length $val || $val =~ m/\n$/;
 		    if ($qu eq '') {
 			my $reconstruct =
 			    "\$val = <<${qu}${delim}${qu}; 1;\n".
-- 
1.7.10.4