lib/squid/format.rb in squid-1.0.0.beta3 vs lib/squid/format.rb in squid-1.0.0.beta4

@@ -14,9 +14,10 @@
         else number_to_delimited value.to_i
       end.to_s
     end
 
     def number_to_minutes_and_seconds(value)
+      return unless value
       signum = '-' if value < 0
       "#{signum}#{value.abs.round/60}:#{(value.abs.round%60).to_s.rjust 2, '0'}"
     end
 
     def number_to_float(value)