I found a memory leak bug in gdb.
Please confirm.
Thanks!



### Test Environment
Ubuntu 20.04, 64 bit binutils (version: v13.1 ;master)

### How to trigger
Compile the program with AddressSanitizer
Run command 
$ touch utils.o
$ touch aaa
$ mkdir dir
$ touch core.357036
$ ./gdb --cd=dir/ --se=utils.o --core=core.357036 --exec=./aaa --pid=1680 --symbols=utils.o

### Details
ASAN report
$./gdb --cd=dir/ --se=utils.o --core=core.357036 --exec=./aaa --pid=1680 --symbols=utils.o 
```
warning: Found custom handler for signal 7 (Bus error) preinstalled.
warning: Found custom handler for signal 8 (Floating point exception) preinstalled.
warning: Found custom handler for signal 11 (Segmentation fault) preinstalled.
warning: Found custom handler for signal 15 (Terminated) preinstalled.
Some signal dispositions inherited from the environment (SIG_DFL/SIG_IGN)
won't be propagated to spawned programs.
GNU gdb (GDB) 13.0.50.20220805-git
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./aaa: No such file or directory.
utils.o: No such file or directory.
Can't attach to process and specify a core file at the same time.

=================================================================
==2012456==ERROR: LeakSanitizer: detected memory leaks

Direct leak of 112 byte(s) in 1 object(s) allocated from:
    #0 0x4e242d in operator new(unsigned long) (/home/cmd/lengthFuzz/binutils/gdb/gdb_cd_se_c_e_p_s/gdb+0x4e242d)
    #1 0x1de9fa6 in ui::ui(_IO_FILE*, _IO_FILE*, _IO_FILE*) /home/cmd/FuzzDateset/binutils/binutils-gdb-binutils-2_39/gdb/top.c:313:19
    #2 0x15bec8b in captured_main_1(captured_main_args*) /home/cmd/FuzzDateset/binutils/binutils-gdb-binutils-2_39/gdb/main.c:676:17
    #3 0x15be28d in captured_main(void*) /home/cmd/FuzzDateset/binutils/binutils-gdb-binutils-2_39/gdb/main.c:1319:3
    #4 0x15be058 in gdb_main(captured_main_args*) /home/cmd/FuzzDateset/binutils/binutils-gdb-binutils-2_39/gdb/main.c:1344:7
    #5 0x4e4f12 in main /home/cmd/FuzzDateset/binutils/binutils-gdb-binutils-2_39/gdb/gdb.c:32:10
    #6 0x7f7aecdff082 in __libc_start_main /build/glibc-SzIz7B/glibc-2.31/csu/../csu/libc-start.c:308:16

Direct leak of 52 byte(s) in 1 object(s) allocated from:
    #0 0x4b0963 in __interceptor_realloc (/home/cmd/lengthFuzz/binutils/gdb/gdb_cd_se_c_e_p_s/gdb+0x4b0963)
    #1 0x7f7aeceea077 in getcwd /build/glibc-SzIz7B/glibc-2.31/io/../sysdeps/unix/sysv/linux/getcwd.c:84:8

Direct leak of 48 byte(s) in 1 object(s) allocated from:
    #0 0x4e242d in operator new(unsigned long) (/home/cmd/lengthFuzz/binutils/gdb/gdb_cd_se_c_e_p_s/gdb+0x4e242d)
    #1 0x1dea176 in ui::ui(_IO_FILE*, _IO_FILE*, _IO_FILE*) /home/cmd/FuzzDateset/binutils/binutils-gdb-binutils-2_39/gdb/top.c:315:19
    #2 0x15bec8b in captured_main_1(captured_main_args*) /home/cmd/FuzzDateset/binutils/binutils-gdb-binutils-2_39/gdb/main.c:676:17
    #3 0x15be28d in captured_main(void*) /home/cmd/FuzzDateset/binutils/binutils-gdb-binutils-2_39/gdb/main.c:1319:3
    #4 0x15be058 in gdb_main(captured_main_args*) /home/cmd/FuzzDateset/binutils/binutils-gdb-binutils-2_39/gdb/main.c:1344:7
    #5 0x4e4f12 in main /home/cmd/FuzzDateset/binutils/binutils-gdb-binutils-2_39/gdb/gdb.c:32:10
    #6 0x7f7aecdff082 in __libc_start_main /build/glibc-SzIz7B/glibc-2.31/csu/../csu/libc-start.c:308:16

Indirect leak of 48 byte(s) in 1 object(s) allocated from:
    #0 0x4e242d in operator new(unsigned long) (/home/cmd/lengthFuzz/binutils/gdb/gdb_cd_se_c_e_p_s/gdb+0x4e242d)
    #1 0x1de9fc1 in ui::ui(_IO_FILE*, _IO_FILE*, _IO_FILE*) /home/cmd/FuzzDateset/binutils/binutils-gdb-binutils-2_39/gdb/top.c:313:35
    #2 0x15bec8b in captured_main_1(captured_main_args*) /home/cmd/FuzzDateset/binutils/binutils-gdb-binutils-2_39/gdb/main.c:676:17
    #3 0x15be28d in captured_main(void*) /home/cmd/FuzzDateset/binutils/binutils-gdb-binutils-2_39/gdb/main.c:1319:3
    #4 0x15be058 in gdb_main(captured_main_args*) /home/cmd/FuzzDateset/binutils/binutils-gdb-binutils-2_39/gdb/main.c:1344:7
    #5 0x4e4f12 in main /home/cmd/FuzzDateset/binutils/binutils-gdb-binutils-2_39/gdb/gdb.c:32:10
    #6 0x7f7aecdff082 in __libc_start_main /build/glibc-SzIz7B/glibc-2.31/csu/../csu/libc-start.c:308:16

SUMMARY: AddressSanitizer: 260 byte(s) leaked in 4 allocation(s).
```