bintray.py: fix the argument check

diff --git a/support/bintray.py b/support/bintray.py
index c300239591b4472e4ef258f6e2b7135576401bd2..56db6ad7d287356ae4af024d3aa02e4b61c1ad6e 100755 (executable)
--- a/support/bintray.py
+++ b/support/bintray.py
@@ -351,11 +351,11 @@ def test_filename():
 
 def main(argv):
     global DEBUG
-    if argv[1] == '--test-filename':
+    if len(argv) > 1 and argv[1] == '--test-filename':
         return test_filename()
     if not BINTRAY_USER or not BINTRAY_PASS:
         error(2, 'No credentals')
-    if argv[1] == '--debug':
+    if len(argv) > 1 and argv[1] == '--debug':
         DEBUG=1
         argv.pop(0)
     cmd = 'do_' + (len(argv) > 1 and argv[1] or 'unknown')