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

This reverts commit 1764f648a56ab5b71d82a7488f0b9dd0da78cc6c.

Bug: 35104859
Test: Build
Change-Id: I2a62ef0a9d71cd6f8b85075d32051bff08c5790b
1 file changed
tree: 38b0d230d84c2bb61814485e539d0f151675b32e
  1. include/
  2. libril/
  3. librilutils/
  4. reference-ril/
  5. rild/
  6. CleanSpec.mk