Coverity: CID 122322, 122321, 122318: uninitialized variables in cppsuite...cursor_bound_01.cpp

CID 122322 (#1 of 1): Uninitialized scalar variable (UNINIT)5. uninit_use: Using uninitialized value exact.431        if (exact < 0) 

CID 122318: Uninitialized scalar variable (UNINIT) [select issue]

   	7. uninit_use_in_call: Using uninitialized value upper_bound._inclusive when calling make_pair. [show details]

CID 122321 (#1 of 1): Uninitialized scalar variable (UNINIT)

8. uninit_use_in_call: Using uninitialized value upper_bound._lower_bound when calling make_pair. [show details]

255        return std::make_pair(lower_bound, upper_bound);