Origin: upstream, commit:c8a27535c248c357234e9a19bea850112c362793
Author: Dmitri Ovodok <dmitrio95@yandex.ru>
Description: fix #297468: fix a crash on reading a corrupted score with linear layout mode in part
 In a corrupted score tick values may sometimes be not synchronized
 between master score and parts. This may lead to incorrect setting
 of layoutAll flag as ticks from different scores are compared.
 Ensuring that only master score ticks are compared fixes layoutAll
 flag for scores corrupted that way and prevents a crash due to not
 making a full layout on score loading. This change makes no
 difference for correctly saved scores.

--- a/libmscore/layout.cpp
+++ b/libmscore/layout.cpp
@@ -4364,7 +4364,7 @@ void Score::doLayoutRange(const Fraction
             }
 //      if (!_systems.isEmpty())
 //            return;
-      bool layoutAll = stick <= Fraction(0,1) && (etick < Fraction(0,1) || etick >= last()->endTick());
+      bool layoutAll = stick <= Fraction(0,1) && (etick < Fraction(0,1) || etick >= masterScore()->last()->endTick());
       if (stick < Fraction(0,1))
             stick = Fraction(0,1);
       if (etick < Fraction(0,1))