Revert "Use empty string for hidl_string instead of doing memset to 0."

This reverts commit 1764f648a56ab5b71d82a7488f0b9dd0da78cc6c.

Bug: 35104859
Test: Build
Change-Id: I2a62ef0a9d71cd6f8b85075d32051bff08c5790b
(cherry picked from commit 30a0e4a94a1be693963b51dc24ea53457e76522d)
1 file changed
tree: 8e52321ff7234f58443db6565e9d4c11452a1dd3
  1. include/
  2. libril/
  3. librilutils/
  4. reference-ril/
  5. rild/
  6. CleanSpec.mk