Comment 19 for bug 1418771

I ran the reproduction scenarion under valgrind and saw this:

==23172== Thread 8 pool:
==23172== Invalid write of size 1
==23172== at 0x174A56C1: tracker_parser_unaccent_nfkd_string (in /usr/lib/x86_64-linux-gnu/tracker-1.0/libtracker-common.so.0.0.0)
==23172== by 0x1726AA02: function_sparql_unaccent (in /usr/lib/x86_64-linux-gnu/tracker-1.0/libtracker-data.so.0.0.0)
==23172== by 0x1791D6EE: sqlite3VdbeExec (in /usr/lib/x86_64-linux-gnu/libsqlite3.so.0.8.6)
==23172== by 0x17926826: sqlite3_step (in /usr/lib/x86_64-linux-gnu/libsqlite3.so.0.8.6)
==23172== by 0x1726B2FF: db_cursor_iter_next (in /usr/lib/x86_64-linux-gnu/tracker-1.0/libtracker-data.so.0.0.0)
==23172== by 0x1726BAB6: tracker_db_cursor_iter_next_thread (in /usr/lib/x86_64-linux-gnu/tracker-1.0/libtracker-data.so.0.0.0)
==23172== by 0x70A68FE: run_in_thread (in /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0.4600.1)
==23172== by 0x7092985: io_job_thread (in /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0.4600.1)
==23172== by 0x70B7D87: g_task_thread_pool_thread (in /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0.4600.1)
==23172== by 0x50FC2FD: g_thread_pool_thread_proxy (in /lib/x86_64-linux-gnu/libglib-2.0.so.0.4600.1)
==23172== by 0x50FB964: g_thread_proxy (in /lib/x86_64-linux-gnu/libglib-2.0.so.0.4600.1)
==23172== by 0x5E706A9: start_thread (pthread_create.c:333)
==23172== Address 0x14072b52 is 0 bytes after a block of size 2 alloc'd
==23172== at 0x4C2DD9F: realloc (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==23172== by 0x17B9D516: u8_normalize (in /usr/lib/x86_64-linux-gnu/libunistring.so.0.1.2)
==23172== by 0x1726A9F4: function_sparql_unaccent (in /usr/lib/x86_64-linux-gnu/tracker-1.0/libtracker-data.so.0.0.0)
==23172== by 0x1791D6EE: sqlite3VdbeExec (in /usr/lib/x86_64-linux-gnu/libsqlite3.so.0.8.6)
==23172== by 0x17926826: sqlite3_step (in /usr/lib/x86_64-linux-gnu/libsqlite3.so.0.8.6)
==23172== by 0x1726B2FF: db_cursor_iter_next (in /usr/lib/x86_64-linux-gnu/tracker-1.0/libtracker-data.so.0.0.0)
==23172== by 0x1726BAB6: tracker_db_cursor_iter_next_thread (in /usr/lib/x86_64-linux-gnu/tracker-1.0/libtracker-data.so.0.0.0)
==23172== by 0x70A68FE: run_in_thread (in /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0.4600.1)
==23172== by 0x7092985: io_job_thread (in /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0.4600.1)
==23172== by 0x70B7D87: g_task_thread_pool_thread (in /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0.4600.1)
==23172== by 0x50FC2FD: g_thread_pool_thread_proxy (in /lib/x86_64-linux-gnu/libglib-2.0.so.0.4600.1)
==23172== by 0x50FB964: g_thread_proxy (in /lib/x86_64-linux-gnu/libglib-2.0.so.0.4600.1)
==23172==