[kcachegrind] Remove QString::null

Review Request #129551 - Created Nov. 24, 2016 and submitted

Information
Christian Ehrlicher
kcachegrind
Reviewers
weidendo

QString::null is a reclict from Qt3 and no longer needed (QString() is fine) - replace it.


  
Josef Weidendorfer
Christian Ehrlicher
Review request changed

Status: Closed (submitted)

Change Summary:

Submitted with commit 88a6e6444341792002d784dc146031c6f07b1b07 by Christian Ehrlicher to branch master.
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