Change isc_buffer_reallocate() into a static functions as it is not used...
Change isc_buffer_reallocate() into a static functions as it is not used outside of isc_buffer_reserve() (cherry picked from commit 20faf465)
Change isc_buffer_reallocate() into a static functions as it is not used outside of isc_buffer_reserve() (cherry picked from commit 20faf465)