BUG #13972: jsonb_to_record cant map camelcase keys

The following bug has been logged on the website:

Bug reference:      13972
Logged by:          Jacob Zneider
Email address:      zn@dbml.dk
PostgreSQL version: 9.4.5
Operating system:   OS x 10.11.3
Description:

Try the following:

select * from json_to_record('{"aA":1,"bB":[1,2,3],"c":"bar"}') as x(aA int,
bB text, c text)

first two columns will be empty.

select * from json_to_record('{"aa":1,"bb":[1,2,3],"c":"bar"}') as x(aA int,
bB text, c text)

All columns are mapped.

select * from json_to_record('{"aa":1,"bb":[1,2,3],"c":"bar"}') as x(aa int,
bb text, c text)

All columns are mapped.