smbios: Fix -smbios type=0, release=... for big endian hosts

Classic endianness bug due to careless dirty coding: assuming reading
a byte from an int variable gets the least significant byte.
Signed-off-by: NMarkus Armbruster <armbru@redhat.com>
Reviewed-by: NLaszlo "ever the optimist" Ersek <lersek@redhat.com>
Message-id: 1370610036-10577-6-git-send-email-armbru@redhat.com
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

hw/i386/smbios.c

@@ -127,6 +127,7 @@ void smbios_add_field(int type, int offset, const void *data, size_t len)
 static void smbios_build_type_0_fields(const char *t)
 {
     char buf[1024];
+    unsigned char major, minor;
 
     if (get_param_value(buf, sizeof(buf), "vendor", t))
         smbios_add_field(0, offsetof(struct smbios_type_0, vendor_str),
@@ -139,8 +140,7 @@ static void smbios_build_type_0_fields(const char *t)
                                      bios_release_date_str),
                          buf, strlen(buf) + 1);
     if (get_param_value(buf, sizeof(buf), "release", t)) {
-        int major, minor;
-        sscanf(buf, "%d.%d", &major, &minor);
+        sscanf(buf, "%hhu.%hhu", &major, &minor);
         smbios_add_field(0, offsetof(struct smbios_type_0,
                                      system_bios_major_release),
                          &major, 1);