The new "Press any key to exit" feature in 1.5.6.7rc1 has a small bug: to close the terminal after running curl, one has to press the "Enter" key, just pressing any other key doesn't work.
At least for me, on Debian Stable Linux, xterm 278, curl 7.38.0.
1.5.6.7rc1 bug "Press any key to exit" requires enter key
1.5.6.7rc1 bug "Press any key to exit" requires enter key
Mozilla/5.0 (X11; Linux i686; rv:31.0) Gecko/20100101 Firefox/31.0 Iceweasel/31.1.0