Fix #315002: Prevent potential crash

Jojo-Schmitz · igorkorsukov · commit 905e64b93bea · 2021-01-03T13:29:40.000+03:00
diff --git a/libmscore/chord.cpp b/libmscore/chord.cpp
@@ -1477,7 +1477,7 @@ qreal Chord::minAbsStemLength() const
 
       // two-note tremolo
       else {
-            if (_tremolo->chord1()->up() == _tremolo->chord2()->up()) {
+            if (_tremolo->chord2() && _tremolo->chord1()->up() == _tremolo->chord2()->up()) {
                   const qreal tremoloMinHeight = _tremolo->minHeight() * spatium();
                   return tremoloMinHeight + beamLvl * beamDist + 2 * td * spatium();
                   }

Original file line number	Diff line number	Diff line change
`@@ -1477,7 +1477,7 @@ qreal Chord::minAbsStemLength() const`
`1477`	`1477`
`1478`	`1478`	`// two-note tremolo`
`1479`	`1479`	`else {`
`1480`		`- if (_tremolo->chord1()->up() == _tremolo->chord2()->up()) {`
	`1480`	`+ if (_tremolo->chord2() && _tremolo->chord1()->up() == _tremolo->chord2()->up()) {`
`1481`	`1481`	`const qreal tremoloMinHeight = _tremolo->minHeight() * spatium();`
`1482`	`1482`	`return tremoloMinHeight + beamLvl * beamDist + 2 * td * spatium();`
`1483`	`1483`	`}`