fix memory leak #4
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Compile error retified
Command history with up down arrow feature added
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Memory leak
when i input ls or exit:
=================================================================
==68496==ERROR: LeakSanitizer: detected memory leaks
Direct leak of 8 byte(s) in 2 object(s) allocated from:
#0 0x7f2e85dd29a7 in __interceptor_strdup ../../../../src/libsanitizer/asan/asan_interceptors.cpp:454
#1 0x55d2b8adbb9f in shell_line_parse /Shell/shell.c:116
#2 0x55d2b8adba24 in shell_loop /Shell/shell.c:91
#3 0x55d2b8adb6cd in main /Shell/shell.c:29
#4 0x7f2e85a79d8f in __libc_start_call_main ../sysdeps/nptl/libc_start_call_main.h:58
Objects leaked above:
0x602000007390 (3 bytes)
0x6020000074d0 (5 bytes)
SUMMARY: AddressSanitizer: 8 byte(s) leaked in 2 allocation(s).