Memory leaks in _nc_init_termtype

[TU Haoxin]

Hi,

A memory leak is found when `tic` processes an input.

```

$./tic input

"input", line 2, col 232: whitespace in name or alias field

"input", line 2, col 232: invalid entry name "O

                                               34UPRPFRL5USO5DBUO269MQWWDEZKI6WZAK75AS65EILCABZ3XE62NUDPQ43KIR7SUBL1G51TA5J8NO8YPBYLCF8FKB1OZOI0LWMA4Z87XFY2RPS09Q4L78DZZ6LNR67AXXEGCXSIF5EIQIQLY088RQ0888BKZCCCHJEM65ZD8VBYUTZKZVN0A0Q5HN0WFXXO61TTT8SJ54VHEWXUGKIC0Q1GTOMNCPD8PUFQO"

=================================================================

==16876==ERROR: LeakSanitizer: detected memory leaks

Direct leak of 3312 byte(s) in 1 object(s) allocated from:

    #0 0x7ffff6ef6b40 in __interceptor_malloc (/usr/lib/x86_64-linux-gnu/libasan.so.4+0xdeb40)

    #1 0x5555555ca044 in _nc_init_termtype ../../ncurses/tinfo/read_entry.c:245

    #2 0x5555555f6285 in _nc_init_entry ../../ncurses/tinfo/alloc_entry.c:81

    #3 0x5555555dfa4f in _nc_parse_entry ../../ncurses/tinfo/parse_entry.c:304

    #4 0x5555555d68a9 in _nc_read_entry_source ../../ncurses/tinfo/comp_parse.c:236

    #5 0x55555558fe94 in main ../../progs/tic.c:983

    #6 0x7ffff6a48c86 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x21c86)

Direct leak of 156 byte(s) in 1 object(s) allocated from:

    #0 0x7ffff6ef6b40 in __interceptor_malloc (/usr/lib/x86_64-linux-gnu/libasan.so.4+0xdeb40)

    #1 0x5555555c9fda in _nc_init_termtype ../../ncurses/tinfo/read_entry.c:243

    #2 0x5555555f6285 in _nc_init_entry ../../ncurses/tinfo/alloc_entry.c:81

    #3 0x5555555dfa4f in _nc_parse_entry ../../ncurses/tinfo/parse_entry.c:304

    #4 0x5555555d68a9 in _nc_read_entry_source ../../ncurses/tinfo/comp_parse.c:236

    #5 0x55555558fe94 in main ../../progs/tic.c:983

    #6 0x7ffff6a48c86 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x21c86)

Direct leak of 44 byte(s) in 1 object(s) allocated from:

    #0 0x7ffff6ef6b40 in __interceptor_malloc (/usr/lib/x86_64-linux-gnu/libasan.so.4+0xdeb40)

    #1 0x5555555c9f70 in _nc_init_termtype ../../ncurses/tinfo/read_entry.c:241

    #2 0x5555555f6285 in _nc_init_entry ../../ncurses/tinfo/alloc_entry.c:81

    #3 0x5555555dfa4f in _nc_parse_entry ../../ncurses/tinfo/parse_entry.c:304

    #4 0x5555555d68a9 in _nc_read_entry_source ../../ncurses/tinfo/comp_parse.c:236

    #5 0x55555558fe94 in main ../../progs/tic.c:983

    #6 0x7ffff6a48c86 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x21c86)

SUMMARY: AddressSanitizer: 3512 byte(s) leaked in 3 allocation(s).

```

Building command: `CC=gcc CFLAGS="-fsanitize=address -g" ../configure

Compiler version: `gcc-7.5.0`

Ncurses version: `6.5` (I also tested with v6.4 and they behave the same)

System: `ubuntu 18.04`

Thanks,

Haoxin

input
Description: input