MDEV-6594: Use separate domain_id for Galera transactions

Post-fix : A typo and better error handling.

sql/wsrep_sst.cc

@@ -451,7 +451,7 @@ static void* sst_joiner_thread (void* a)
       } else {
         // Scan state ID first followed by wsrep_gtid_domain_id.
         char uuid[512];
-        uint32 domain_id;
+        long int domain_id;
         size_t len= pos - out + 1;
 
         if (len > sizeof(uuid)) goto err;       // safety check
@@ -464,14 +464,18 @@ static void* sst_joiner_thread (void* a)
         }
         else if (wsrep_gtid_mode)
         {
+          errno= 0;                             /* Reset the errno */
           domain_id= strtol(pos + 1, NULL, 10);
-          if (domain_id < 1000 || domain_id > 0xFFFF)
+          err= errno;
+
+          /* Check if we received a valid gtid_domain_id. */
+          if (err == EINVAL || err == ERANGE || domain_id < 0x0 || domain_id > 0xFFFF)
           {
             WSREP_ERROR("Failed to get donor wsrep_gtid_domain_id.");
             err= EINVAL;
             goto err;
           } else {
-            wsrep_gtid_domain_id= domain_id;
+            wsrep_gtid_domain_id= (uint32) domain_id;
           }
         }
       }