Replication: put server.master client creation into separated function.

src/replication.c

@@ -854,6 +854,23 @@ void replicationEmptyDbCallback(void *privdata) {
     replicationSendNewlineToMaster();
 }
 
+/* Once we have a link with the master and the synchroniziation was
+ * performed, this function materializes the master client we store
+ * at server.master, starting from the specified file descriptor. */
+void replicationCreateMasterClient(int fd) {
+    server.master = createClient(fd);
+    server.master->flags |= REDIS_MASTER;
+    server.master->authenticated = 1;
+    server.repl_state = REDIS_REPL_CONNECTED;
+    server.master->reploff = server.repl_master_initial_offset;
+    memcpy(server.master->replrunid, server.repl_master_runid,
+        sizeof(server.repl_master_runid));
+    /* If master offset is set to -1, this master is old and is not
+     * PSYNC capable, so we flag it accordingly. */
+    if (server.master->reploff == -1)
+        server.master->flags |= REDIS_PRE_PSYNC;
+}
+
 /* Asynchronously read the SYNC payload we receive from a master */
 #define REPL_MAX_WRITTEN_BEFORE_FSYNC (1024*1024*8) /* 8 MB */
 void readSyncBulkPayload(aeEventLoop *el, int fd, void *privdata, int mask) {
@@ -1017,17 +1034,7 @@ void readSyncBulkPayload(aeEventLoop *el, int fd, void *privdata, int mask) {
         /* Final setup of the connected slave <- master link */
         zfree(server.repl_transfer_tmpfile);
         close(server.repl_transfer_fd);
-        server.master = createClient(server.repl_transfer_s);
-        server.master->flags |= REDIS_MASTER;
-        server.master->authenticated = 1;
-        server.repl_state = REDIS_REPL_CONNECTED;
-        server.master->reploff = server.repl_master_initial_offset;
-        memcpy(server.master->replrunid, server.repl_master_runid,
-            sizeof(server.repl_master_runid));
-        /* If master offset is set to -1, this master is old and is not
-         * PSYNC capable, so we flag it accordingly. */
-        if (server.master->reploff == -1)
-            server.master->flags |= REDIS_PRE_PSYNC;
+        replicationCreateMasterClient(server.repl_transfer_s);
         redisLog(REDIS_NOTICE, "MASTER <-> SLAVE sync: Finished with success");
         /* Restart the AOF subsystem now that we finished the sync. This
          * will trigger an AOF rewrite, and when done will start appending