If tutorial is entered, we get following leak on exit:
=================================================================
==81358==ERROR: LeakSanitizer: detected memory leaks
Direct leak of 96 byte(s) in 3 object(s) allocated from:
#0 0x7f6996edefdf in __interceptor_malloc ../../../../src/libsanitizer/asan/asan_malloc_linux.cpp:69
#1 0x5601c255bcbb in alloc /home/miku/src/NetHack/src/alloc.c:71
Indirect leak of 5064 byte(s) in 3 object(s) allocated from:
#0 0x7f6996edefdf in __interceptor_malloc ../../../../src/libsanitizer/asan/asan_malloc_linux.cpp:69
#1 0x5601c255be1e in alloc /home/miku/src/NetHack/src/alloc.c:71
#2 0x5601c255be1e in dupstr /home/miku/src/NetHack/src/alloc.c:236
SUMMARY: AddressSanitizer: 5160 byte(s) leaked in 6 allocation(s).
Fix this by freeing the cloned selection before returning.
