Matthijs Mekking authored Feb 26, 2019 and Ondřej Surý committed Apr 25, 2019

- Always set is_zonep in query_getdb; previously it was only set if
  result was ISC_R_SUCCESS or ISC_R_NOTFOUND.
- Don't reset is_zone for redirect.
- Style cleanup.

(cherry picked from commit 3352270bdbbb39b167072aa282c6b310ffd96a7d)
(cherry picked from commit e2500c60)
(cherry picked from commit 4f00c86e)