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e379528254
json_listconfigs() returns in the middle; the name0 is not always freed.
It will be freed later with the response, but our memleak detection doesn't
know that, and Travis caught it:
Global errors:
E - Node /tmp/ltests-5mfrzh5v/test_hsmtool_secret_decryption_1/lightning-1/ has memory leaks: [
E {
E "backtrace": [
E "ccan/ccan/tal/tal.c:437 (tal_alloc_)",
E "ccan/ccan/tal/tal.c:466 (tal_alloc_arr_)",
E "ccan/ccan/tal/tal.c:794 (tal_dup_)",
E "ccan/ccan/tal/str/str.c:32 (tal_strndup_)",
E "lightningd/options.c:1122 (add_config)",
E "lightningd/options.c:1282 (json_listconfigs)",
E "lightningd/jsonrpc.c:588 (command_exec)",
E "lightningd/jsonrpc.c:679 (rpc_command_hook_callback)",
E "lightningd/plugin_hook.c:123 (plugin_hook_call_)",
E "lightningd/jsonrpc.c:729 (plugin_hook_call_rpc_command)",
E "lightningd/jsonrpc.c:736 (call_rpc_command_hook)",
E "common/timeout.c:39 (timer_expired)",
E "lightningd/io_loop_with_timers.c:32 (io_loop_with_timers)",
E "lightningd/lightningd.c:871 (main)"
E ],
E "label": "lightningd/options.c:1122:char[]",
E "parents": [
E "lightningd/json_stream.c:49:struct json_stream",
E "ccan/ccan/io/io.c:91:struct io_conn",
E "lightningd/lightningd.c:104:struct lightningd"
E ],
E "value": "0x5569ada057a8"
E }
E ]
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>