Fix return value comment for strlclr()

string.asm

@@ -146,7 +146,7 @@ strclr:
 ;----- strlclr(char* str, int size) -----;
 ; Replaces characters of a string with \0, using arg size
 ; <!> DANGEROUS FUNCTION, it might exceed string boundaries if used incorrectly. Use strclr() instead!
-; Function has no return value, rax is unmodified
+; Function has no return value, rax will be 0 (0x0 stored in rax for opcode stosb)
 strlclr:
 	push	rbp
 	mov	rbp, rsp