copi new gnl en bonus

get_next_line_utils.c

@@ -71,3 +71,26 @@ size_t	ft_strlen(const char *str)
 		i++;
 	return (i);
 }
+
+char	*ft_strjoinfree(char const *s1, char const *s2)
+{
+	char	*str;
+	int		len;
+	int		j;
+
+	if (!s1 || !s2)
+		return (NULL);
+	len = ft_strlen(s1) + ft_strlen(s2);
+	if (!(str = (char *)malloc(sizeof(char) * (len + 1))))
+		return (NULL);
+	len = 0;
+	j = 0;
+	while (s1[j] != '\0')
+		str[len++] = s1[j++];
+	j = 0;
+	while (s2[j] != '\0')
+		str[len++] = s2[j++];
+	str[len] = '\0';
+	free((char*)s1);
+	return (str);
+}