Fix extract_utils when not using blob sections

"$3" evaluates as "" when $3 is empty, and so $# is still 3
When $3 is empty, do not use it

Change-Id: I87df7dd8ed23cac3d4cff16dce0996bbe0a3e6cc
1 file changed
tree: 22a955c8dec7b241ff8146101f8dc1ea026ef75c
  1. build/
  2. charger/
  3. config/
  4. overlay/
  5. prebuilt/
  6. sepolicy/
  7. utils/
  8. Android.mk