Coverity warnings fixed:
CID 316517 (#1 of 1): Uninitialized scalar variable (UNINIT)
13. uninit_use_in_call: Using uninitialized value t. Field t.err is uninitialized when calling push_back
CID 316519 (#1 of 1): Uninitialized scalar variable (UNINIT)
3. uninit_use_in_call: Using uninitialized value v. Field v.tstart is uninitialized when calling push_back
CID 316547 (#1 of 1): Uninitialized scalar variable (UNINIT)
13. uninit_use_in_call: Using uninitialized value t. Field t.err is uninitialized when calling push_back
CID 316556 (#1 of 1): Uninitialized scalar variable (UNINIT)
3. uninit_use_in_call: Using uninitialized value v. Field v.tstart is uninitialized when calling push_back