[releng] convert-to-tarballs: Missing tarball site should be fatal

[Michael Catanzaro <mcatanzaro src gnome org>]

commit 38a265cfbd984bfaae97d27c126d067172b7c26b
Author: Michael Catanzaro <mcatanzaro igalia com>
Date:   Mon Apr 16 20:48:24 2018 -0500

    convert-to-tarballs: Missing tarball site should be fatal

 tools/smoketesting/convert-to-tarballs.py |    5 ++---
 1 files changed, 2 insertions(+), 3 deletions(-)
---
diff --git a/tools/smoketesting/convert-to-tarballs.py b/tools/smoketesting/convert-to-tarballs.py
index ef5bfc0..ef2cffa 100755
--- a/tools/smoketesting/convert-to-tarballs.py
+++ b/tools/smoketesting/convert-to-tarballs.py
@@ -717,9 +717,8 @@ class ConvertToTarballs:
             self.write_bst_file(fullpath, element, location, hash)
 
         except IOError:
-            print '**************************************************'
-            print 'Could not find site for ' + module_name
-            print '**************************************************'
+            print 'FATAL: Could not find site for ' + module_name
+            sys.exit(1)
 
     def process_bst_files(self, directory):
         for root, dirs, files in os.walk(directory):