Avoid double-lookup in QLibraryStore::findOrCreate()

The code is in a critical section, so don't waste time traversing the
QMap twice.

Now that two previous commits have re-arranged the code such that
lookup and insertion are symmetric, we can combine them into a single
lookup using operator[].

Pick-to: 6.5
Change-Id: I4a10cece65b8c35d05a9b80967bf15d2e15bd73f
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
(cherry picked from commit 7192b1184190982b6422196121821838d9fcbba6)
Reviewed-by: Qt Cherry-pick Bot <cherrypick_bot@qt-project.org>
(cherry picked from commit 25649bcd3ba36169f77fc717e8e1b278785bdb1b)

0 files changed, 0 insertions, 0 deletions