Merge pull request #8617 from gtorodelvalle/dialer-bug-846261-cannot-delete-unknown-calls

Bug 846261 - [OPEN_][call log]some call log can not be delete.(617002041389) (r=jmcanterafonseca)(cherry picked from commit 9f410bd165e5e7b20790f6b9c4c00ccb7fddd567)