ftp tests: libcurl returns CURLE_FTP_ACCEPT_FAILED better now

Since commit 57aeabcc, it handles errors on the control connection
while waiting for the data connection better.

Test 591 and 592 are updated accordingly.

tests/data/test591

@@ -63,9 +63,9 @@ TYPE I
 STOR 591
 QUIT
 </protocol>
-# CURLE_UPLOAD_FAILED = 25
+# CURLE_FTP_ACCEPT_FAILED = 10
 <errorcode>
-25
+10
 </errorcode>
 <upload>
 </upload>

tests/data/test592

@@ -62,10 +62,11 @@ EPRT |1|
 PORT
 TYPE I
 STOR 592
+QUIT
 </protocol>
-# 28 == CURLE_OPERATION_TIMEDOUT
+# CURLE_FTP_ACCEPT_FAILED = 10
 <errorcode>
-28
+10
 </errorcode>
 <upload>
 </upload>