pgAdmin 4 commit: Fix usage of QString::toUtf8(). Fixes #2299

Fix usage of QString::toUtf8(). Fixes #2299

Desktop runtime has a couple bugs using already freed memory supplied to embedded python leading to occasional crashes
andfailures to start maintenance processes (VACUUM, ANALYZE, REINDEX, CLUSTER). 

This is caused by incorrect usage of QString::toUtf8() which returns newly created QByteArray which is automatically
destroyedonce closing context; e.g. 
Py_SetPythonHome(pythonHome.toUtf8().data());

Branch
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master

Details
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http://git.postgresql.org/gitweb?p=pgadmin4.git;a=commitdiff;h=72548a99e142ec508e815a7e50c5611e2fe34407
Author: Maxim Zakharov <dp.maxime@gmail.com>

Modified Files
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runtime/Server.cpp | 32 ++++++++++++++++++++------------
runtime/Server.h   |  5 +++++
2 files changed, 25 insertions(+), 12 deletions(-)