There is a memory leak vulnerability

[fCorleone]

=================================================================
==24927==ERROR: LeakSanitizer: detected memory leaks

Direct leak of 1058 byte(s) in 1 object(s) allocated from:
#0 0x4b9808 (/home/ubuntu/fuzz/cstring/app+0x4b9808)
#1 0x4f13a0 (/home/ubuntu/fuzz/cstring/app+0x4f13a0)

SUMMARY: AddressSanitizer: 1058 byte(s) leaked in 1 allocation(s).