OMEMO - memory leaks at startup

[pasis]

omemo_on_connect() doesn't free error on G_FILE_ERROR_NOENT error. This leads to memory leaks in 4 places if OMEMO is not configured.

Expected Behavior

No memory leaks.

Current Behavior

==9474== 42 (16 direct, 26 indirect) bytes in 1 blocks are definitely lost in loss record 1,695 of 3,317
==9474==    at 0x483879F: malloc (vg_replace_malloc.c:307)
==9474==    by 0x5D1BE38: g_malloc (in /usr/lib64/libglib-2.0.so.0.6600.4)
==9474==    by 0x5D33DE1: g_slice_alloc (in /usr/lib64/libglib-2.0.so.0.6600.4)
==9474==    by 0x5CFF874: g_error_new_literal (in /usr/lib64/libglib-2.0.so.0.6600.4)
==9474==    by 0x5CFFB7B: g_set_error_literal (in /usr/lib64/libglib-2.0.so.0.6600.4)
==9474==    by 0x5D0D2EF: g_key_file_load_from_file (in /usr/lib64/libglib-2.0.so.0.6600.4)
==9474==    by 0x1B3770: omemo_on_connect (omemo.c:264)
==9474==    by 0x15C645: sv_ev_login_account_success (server_events.c:97)
==9474==    by 0x147D48: session_login_success (session.c:299)
==9474==    by 0x64BC014: _handle_bind (in /usr/lib64/libstrophe.so.0.0.0)
==9474==    by 0x64C162C: handler_fire_stanza (in /usr/lib64/libstrophe.so.0.0.0)
==9474==    by 0x64BDECA: _handle_stream_stanza (in /usr/lib64/libstrophe.so.0.0.0)
==9474==
==9474== 42 (16 direct, 26 indirect) bytes in 1 blocks are definitely lost in loss record 1,696 of 3,317
==9474==    at 0x483879F: malloc (vg_replace_malloc.c:307)
==9474==    by 0x5D1BE38: g_malloc (in /usr/lib64/libglib-2.0.so.0.6600.4)
==9474==    by 0x5D33DE1: g_slice_alloc (in /usr/lib64/libglib-2.0.so.0.6600.4)
==9474==    by 0x5CFF874: g_error_new_literal (in /usr/lib64/libglib-2.0.so.0.6600.4)
==9474==    by 0x5CFFB7B: g_set_error_literal (in /usr/lib64/libglib-2.0.so.0.6600.4)
==9474==    by 0x5D0D2EF: g_key_file_load_from_file (in /usr/lib64/libglib-2.0.so.0.6600.4)
==9474==    by 0x1B37AE: omemo_on_connect (omemo.c:275)
==9474==    by 0x15C645: sv_ev_login_account_success (server_events.c:97)
==9474==    by 0x147D48: session_login_success (session.c:299)
==9474==    by 0x64BC014: _handle_bind (in /usr/lib64/libstrophe.so.0.0.0)
==9474==    by 0x64C162C: handler_fire_stanza (in /usr/lib64/libstrophe.so.0.0.0)
==9474==    by 0x64BDECA: _handle_stream_stanza (in /usr/lib64/libstrophe.so.0.0.0)
==9474==
==9474== 42 (16 direct, 26 indirect) bytes in 1 blocks are definitely lost in loss record 1,697 of 3,317
==9474==    at 0x483879F: malloc (vg_replace_malloc.c:307)
==9474==    by 0x5D1BE38: g_malloc (in /usr/lib64/libglib-2.0.so.0.6600.4)
==9474==    by 0x5D33DE1: g_slice_alloc (in /usr/lib64/libglib-2.0.so.0.6600.4)
==9474==    by 0x5CFF874: g_error_new_literal (in /usr/lib64/libglib-2.0.so.0.6600.4)
==9474==    by 0x5CFFB7B: g_set_error_literal (in /usr/lib64/libglib-2.0.so.0.6600.4)
==9474==    by 0x5D0D2EF: g_key_file_load_from_file (in /usr/lib64/libglib-2.0.so.0.6600.4)
==9474==    by 0x1B380E: omemo_on_connect (omemo.c:283)
==9474==    by 0x15C645: sv_ev_login_account_success (server_events.c:97)
==9474==    by 0x147D48: session_login_success (session.c:299)
==9474==    by 0x64BC014: _handle_bind (in /usr/lib64/libstrophe.so.0.0.0)
==9474==    by 0x64C162C: handler_fire_stanza (in /usr/lib64/libstrophe.so.0.0.0)
==9474==    by 0x64BDECA: _handle_stream_stanza (in /usr/lib64/libstrophe.so.0.0.0)
==9474==
==9474== 42 (16 direct, 26 indirect) bytes in 1 blocks are definitely lost in loss record 1,698 of 3,317
==9474==    at 0x483879F: malloc (vg_replace_malloc.c:307)
==9474==    by 0x5D1BE38: g_malloc (in /usr/lib64/libglib-2.0.so.0.6600.4)
==9474==    by 0x5D33DE1: g_slice_alloc (in /usr/lib64/libglib-2.0.so.0.6600.4)
==9474==    by 0x5CFF874: g_error_new_literal (in /usr/lib64/libglib-2.0.so.0.6600.4)
==9474==    by 0x5CFFB7B: g_set_error_literal (in /usr/lib64/libglib-2.0.so.0.6600.4)
==9474==    by 0x5D0D2EF: g_key_file_load_from_file (in /usr/lib64/libglib-2.0.so.0.6600.4)
==9474==    by 0x1B386E: omemo_on_connect (omemo.c:291)
==9474==    by 0x15C645: sv_ev_login_account_success (server_events.c:97)
==9474==    by 0x147D48: session_login_success (session.c:299)
==9474==    by 0x64BC014: _handle_bind (in /usr/lib64/libstrophe.so.0.0.0)
==9474==    by 0x64C162C: handler_fire_stanza (in /usr/lib64/libstrophe.so.0.0.0)
==9474==    by 0x64BDECA: _handle_stream_stanza (in /usr/lib64/libstrophe.so.0.0.0)

Possible Solution

Free error.

Steps to Reproduce (for bugs)

1. Build profanity with OMEMO support
2. Run it under valgrind and connect to your account

Environment

Master branch 45fd229.