SystemUI: Fix displaying of user photo.

If owner profile does not have a photo but any associated profile have it
then photo will not be displayed. This case was broken by 67735c4efc458534906b2fb4683300c6e84c809b.

Change-Id: Ied7b1f8a5998c18bffcfd8bd603b4aa35d705c80
Merge pull request #51 from CyanogenMod/cm-11.0

SystemUI: Fix displaying of user photo.