Handle case of bond device with no slaves

Bug 4761
Don't use uninitialized variable. Function should return empty undef
unless slaves exist.

1 files changed, 2 insertions, 0 deletions

diff --git a/scripts/vyatta-bonding.pl b/scripts/vyatta-bonding.pl
index 53e6bffa..5e90948b 100755
--- a/scripts/vyatta-bonding.pl
+++ b/scripts/vyatta-bonding.pl
@@ -64,6 +64,8 @@ sub get_slaves {
       or die "$intf is not a bonding interface";
     my $slaves = <$f>;
     close $f;
+    return unless $slaves;
+
     chomp $slaves;
 
     return split( ' ', $slaves );