From cmssw 5 3 11 patch6 tracking summary map patch4repro2011

this patch was done months ago, but apparently not propagated in 53x :(

this patch is needed in order to have the TrackingSummaryMap filled [it is used in the certification]
w/o this patch the map is white

![before_patch](https://f.cloud.github.com/assets/4946419/1074288/06d7a76a-14b7-11e3-9f36-62b483683677.png)
![after_patch](https://f.cloud.github.com/assets/4946419/1074255/6e333236-14b6-11e3-8ef5-133c08a94285.png)