connection password dialog displayed in a loop when no default schema is specified

[Karl-Philipp Richter]

After creating a connection to an existing host and database with a user without privileges and without specifying a default schema causes the password entry dialog displayed in a loop without any feedback what went wrong or whether the dialog is displayed again and again.

After closing the dialog and creating another connection `mysql-workbench` fails with segmentation fault (reported as https://bugs.launchpad.net/ubuntu/+source/mysql-workbench/+bug/1451037).

ProblemType: Bug
DistroRelease: Ubuntu 15.04
Package: mysql-workbench 6.2.3+dfsg-7build1
Uname: Linux 4.0.1-040001-generic x86_64
ApportVersion: 2.17.2-0ubuntu1
Architecture: amd64
CurrentDesktop: Unity
Date: Sat May 2 15:39:45 2015
EcryptfsInUse: Yes
InstallationDate: Installed on 2015-04-02 (29 days ago)
InstallationMedia: Ubuntu 15.04 "Vivid Vervet" - Beta amd64 (20150326)
ProcEnviron:
 TERM=xterm
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=de_DE.UTF-8
 SHELL=/bin/bash
SourcePackage: mysql-workbench
SystemImageInfo:
 current build number: 0
 device name:
 channel: daily
 last update: Unknown
UpgradeStatus: No upgrade log present (probably fresh install)