dgit: WWW::Curl: Double check that $response_body was set

We are making some assumptions about how WWW::Curl behaves. This
confess, with appropriate tests, should catch any future problems.

Signed-off-by: Ian Jackson <ijackson@chiark.greenend.org.uk>

1 files changed, 2 insertions, 0 deletions

diff --git a/dgit b/dgit
index f7b5025..4bd2e05 100755
--- a/dgit
+++ b/dgit
@@ -1223,6 +1223,8 @@ sub url_fetch ($;@) {
     
     fail f_ "fetch of %s gave HTTP code %s", $url, $code
 	unless $url =~ m#^file://# or $code =~ m/^2/;
+
+    confess unless defined $response_body;
     return $response_body;
 }