warning and critical may be empty, so use %s not %d

diff --git a/check_postgres.pl b/check_postgres.pl
index 8033ba368b8c992152bfe498171975ad19b01f54..2729ce6a7efee8604323ef4d8e77aeceb4e7ec19 100755 (executable)
--- a/check_postgres.pl
+++ b/check_postgres.pl
@@ -3975,7 +3975,7 @@ WHERE current_query <> '<IDLE>'$USERWHERECLAUSE
 
        $MRTG and do_mrtg({one => $maxtime, msg => $whodunit});
 
-       $db->{perf} .= sprintf q{'%s'=%s;%d;%d},
+       $db->{perf} .= sprintf q{'%s'=%s;%s;%s},
                        $whodunit,
                        $maxtime,
                        $warning,