am f05ec923: Update VCardComposer getOwnerPhoneNumberVcard() to support empty vcard for 0.vcf

Merge commit 'f05ec9237ec907be3f2c581a950149435bd585fb' into eclair-mr2-plus-aosp

* commit 'f05ec9237ec907be3f2c581a950149435bd585fb':
  Update VCardComposer getOwnerPhoneNumberVcard() to support empty vcard for 0.vcf