extra.c : in pop3_quit() put a case for ERR_NO_FILE since the fdopen()

failed ofile == NULL we should not attempt to fprintf(ofile, ..) nor
fflush().  Buglet discover when working on imap4d.
pop3d.[ch]/user.c : indentation and comments.

@@ -95,14 +95,17 @@ pop3_abquit (int reason)
       fprintf (ofile, "-ERR Out of memory, quitting\r\n");
       syslog (LOG_ERR, "Out of memory");
       break;
+
     case ERR_DEAD_SOCK:
       fprintf (ofile, "-ERR Socket closed, quitting\r\n");
       syslog (LOG_ERR, "Socket closed");
       break;
+
     case ERR_SIGNAL:
       fprintf (ofile, "-ERR Quitting on signal\r\n");
       syslog (LOG_ERR, "Quitting on signal");
       break;
+
     case ERR_TIMEOUT:
       fprintf (ofile, "-ERR Session timed out\r\n");
       if (state == TRANSACTION)
@@ -110,12 +113,19 @@ pop3_abquit (int reason)
       else
 	syslog (LOG_INFO, "Session timed out for no user");
       break;
+
+    case ERR_NO_OFILE:
+      syslog (LOG_INFO, "No socket to send to");
+      break;
+
     default:
       fprintf (ofile, "-ERR Quitting (reason unknown)\r\n");
       syslog (LOG_ERR, "Unknown quit");
       break;
     }
-  fflush (ofile);
+
+  if (ofile)
+    fflush (ofile);
   closelog();
   exit (1);
 }

@@ -213,6 +213,7 @@ pop3_mainloop (int infile, int outfile)
   state = AUTHORIZATION;
   curr_time = time (NULL);
 
+  /* FIXME:  Retreive hostname with getpeername() and log.  */
   syslog (LOG_INFO, "Incoming connection opened");
 
   /* Prepare the shared secret for APOP.  */

@@ -134,18 +134,14 @@ pop3_user (const char *arg)
 
       pw = getpwnam (arg);
 #ifndef USE_LIBPAM
-      if (pw == NULL)
-	return ERR_BAD_LOGIN;
-      if (pw->pw_uid < 1)
+      if (pw == NULL || pw->pw_uid < 1)
 	return ERR_BAD_LOGIN;
       if (strcmp (pw->pw_passwd, crypt (pass, pw->pw_passwd)))
 	{
 #ifdef HAVE_SHADOW_H
 	  struct spwd *spw;
 	  spw = getspnam (arg);
-	  if (spw == NULL)
-	    return ERR_BAD_LOGIN;
-	  if (strcmp (spw->sp_pwdp, crypt (pass, spw->sp_pwdp)))
+	  if (spw == NULL || strcmp (spw->sp_pwdp, crypt (pass, spw->sp_pwdp)))
 #endif /* HAVE_SHADOW_H */
 	    return ERR_BAD_LOGIN;
 	}