overload cmp operator for PVE::Exception

So that we can use ($err eq "timeout") like expressions.

diff --git a/data/PVE/Exception.pm b/data/PVE/Exception.pm
index b30d0eda0f55b59c2a27e793c133c2564d745e78..8004d0555221080675001b076e6c2cfc93b2b560 100755 (executable)
--- a/data/PVE/Exception.pm
+++ b/data/PVE/Exception.pm
@@ -15,6 +15,11 @@ use HTTP::Status qw(:constants);
 @ISA = qw(Exporter);
 
 use overload '""' => sub {local $@; shift->stringify};
+use overload 'cmp' => sub {
+    my ($a, $b) = @_;
+    local $@;  
+    return "$a" cmp "$b"; # compare as string
+};
 
 @EXPORT_OK = qw(raise raise_param_exc);