iptables-test: Don't choke on empty lines

The script code wasn't expecting empty lines:

| Traceback (most recent call last):
|   File "./iptables-test.py", line 380, in <module>
|     main()
|   File "./iptables-test.py", line 370, in main
|     file_tests, file_passed = run_test_file(filename, args.netns)
|   File "./iptables-test.py", line 265, in run_test_file
|     if item[1] == "=":
| IndexError: list index out of range

Fix this by ignoring empty lines or those consisting of whitespace only.

While being at it, remove the empty line from libxt_IDLETIMER.t which
exposed the problem.

Signed-off-by: Phil Sutter <phil@nwl.cc>

1 files changed, 1 insertions, 1 deletions

diff --git a/iptables-test.py b/iptables-test.py
index e986d7a3..6b6eb611 100755
--- a/iptables-test.py
+++ b/iptables-test.py
@@ -221,7 +221,7 @@ def run_test_file(filename, netns):
         execute_cmd("ip netns add ____iptables-container-test", filename, 0)
 
     for lineno, line in enumerate(f):
-        if line[0] == "#":
+        if line[0] == "#" or len(line.strip()) == 0:
             continue
 
         if line[0] == ":":