[iptables PATCH] tests: shell: Sanitize nft-only/0009-needless-bitwise_0

[Phil Sutter <phil@nwl.cc>]

Some versions of awk (gawk-4.2.1-4.el8 in particular) also print the
non-debug ruleset listing's empty lines, causing the diff to fail. Catch
this by exiting upon seeing the first table heading. For the sake of
comparing bytecode, the actual ruleset listing is not interesting,
anyway.

Fixes: 0f7ea0390b336 ("tests/shell: Fix nft-only/0009-needless-bitwise_0")
Signed-off-by: Phil Sutter <phil@nwl.cc>
---
 iptables/tests/shell/testcases/nft-only/0009-needless-bitwise_0 | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/iptables/tests/shell/testcases/nft-only/0009-needless-bitwise_0 b/iptables/tests/shell/testcases/nft-only/0009-needless-bitwise_0
index 41588a10863ec..34802cc26aad4 100755
--- a/iptables/tests/shell/testcases/nft-only/0009-needless-bitwise_0
+++ b/iptables/tests/shell/testcases/nft-only/0009-needless-bitwise_0
@@ -340,7 +340,7 @@ bridge filter OUTPUT 10 9
 # - lines with bytecode (starting with '  [')
 # - empty lines (so printed diff is not a complete mess)
 filter() {
-	awk '/^(  \[|$)/{print}'
+	awk '/^table /{exit} /^(  \[|$)/{print}'
 }
 
 diff -u -Z <(filter <<< "$EXPECT") <(nft --debug=netlink list ruleset | filter)
-- 
2.40.0