Use proper check for spn for operator name display

Change null check to null or empty string check.

bug:7389730
Change-Id: I593429b8668b49978ad38b28062b8b2031464813
1 file changed
tree: 67ac459afa6ab0e17147e5f3edca46c675888c71
  1. Android.mk
  2. CleanSpec.mk
  3. mockril/
  4. src/
  5. tests/