optimize 16- and 32-bit moves

function                                             old     new   delta
udhcpd_main                                         1239    1257     +18
udhcp_add_simple_option                               93      92      -1
buffer_read_le_u32                                    19      18      -1
unpack_gz_stream_with_info                           526     520      -6
dnsd_main                                           1470    1463      -7
udhcp_run_script                                    1208    1186     -22
send_ACK                                             255     229     -26
arping_main                                         1661    1623     -38
send_offer                                           470     428     -42
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 1/8 up/down: 18/-143)          Total: -125 bytes

1 files changed, 5 insertions, 5 deletions

diff --git a/networking/udhcp/script.c b/networking/udhcp/script.c
index 8dff9b700..4ae17fb8d 100644
--- a/networking/udhcp/script.c
+++ b/networking/udhcp/script.c
@@ -90,19 +90,19 @@ static char *alloc_fill_opts(uint8_t *option, const struct dhcp_option *type_p,
                         dest += sprintf(dest, "%u", *option);
                         break;
                 case OPTION_U16:
-                        memcpy(&val_u16, option, 2);
+                        move_from_unaligned16(val_u16, option);
                         dest += sprintf(dest, "%u", ntohs(val_u16));
                         break;
                 case OPTION_S16:
-                        memcpy(&val_s16, option, 2);
+                        move_from_unaligned16(val_s16, option);
                         dest += sprintf(dest, "%d", ntohs(val_s16));
                         break;
                 case OPTION_U32:
-                        memcpy(&val_u32, option, 4);
+                        move_from_unaligned32(val_u32, option);
                         dest += sprintf(dest, "%lu", (unsigned long) ntohl(val_u32));
                         break;
                 case OPTION_S32:
-                        memcpy(&val_s32, option, 4);
+                        move_from_unaligned32(val_s32, option);
                         dest += sprintf(dest, "%ld", (long) ntohl(val_s32));
                         break;
                 case OPTION_STRING:
@@ -183,7 +183,7 @@ static char **fill_envp(struct dhcpMessage *packet)
                 /* Fill in a subnet bits option for things like /24 */
                 if (dhcp_options[i].code == DHCP_SUBNET) {
                         uint32_t subnet;
-                        memcpy(&subnet, temp, 4);
+                        move_from_unaligned32(subnet, temp);
                         envp[j++] = xasprintf("mask=%d", mton(subnet));
                 }
  next: