fix fastbin_reverse_into_tcache.c

Author: Kyle-Kyle

glibc_2.42/fastbin_reverse_into_tcache.c

@@ -50,7 +50,8 @@ int main(){
 	// Create an array on the stack and initialize it with garbage.
 	size_t stack_var[6];
 	memset(stack_var, 0xcd, sizeof(stack_var));
-	
+	stack_var[1] = 0x51;
+
 	printf("The stack address that we intend to target: %p\n"
 		   "It's current value is %p\n", &stack_var[2], (char*)stack_var[2]);