fix kconfig.pl split for config symbols that have "0" as value

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@8847 3c298f89-4303-0410-b956-a3cf2f4a3e73

1 files changed, 1 insertions, 1 deletions

diff --git a/scripts/kconfig.pl b/scripts/kconfig.pl
index 53b8f11025..181b35ad47 100755
--- a/scripts/kconfig.pl
+++ b/scripts/kconfig.pl
@@ -72,7 +72,7 @@ sub config_diff($$) {
 	my %config;
 	
 	foreach my $config (keys %$cfg2) {
-		if (!$cfg1->{$config} or $cfg1->{$config} ne $cfg2->{$config}) {
+		if (!defined($cfg1->{$config}) or $cfg1->{$config} ne $cfg2->{$config}) {
 			$config{$config} = $cfg2->{$config};
 		}
 	}