Core/Movement: shield ChaseMovementGenerator against a potential crash

Since GenericMovementGenerator can be built with any MOTION_TYPE

(cherry picked from commit 98fd8d4c748942cc7d7acde97610b7b0688472de)

1 files changed, 4 insertions, 1 deletions

diff --git a/src/server/game/Movement/MovementGenerators/ChaseMovementGenerator.cpp b/src/server/game/Movement/MovementGenerators/ChaseMovementGenerator.cpp
index ef0571cbdf0..8f84f248cbd 100644
--- a/src/server/game/Movement/MovementGenerators/ChaseMovementGenerator.cpp
+++ b/src/server/game/Movement/MovementGenerators/ChaseMovementGenerator.cpp
@@ -31,7 +31,10 @@ static bool IsMutualChase(Unit* owner, Unit* target)
     if (target->GetMotionMaster()->GetCurrentMovementGeneratorType() != CHASE_MOTION_TYPE)
         return false;
 
-    return (dynamic_cast<ChaseMovementGenerator const*>(target->GetMotionMaster()->GetCurrentMovementGenerator())->GetTarget() == owner);
+    if (ChaseMovementGenerator* movement = dynamic_cast<ChaseMovementGenerator*>(target->GetMotionMaster()->GetCurrentMovementGenerator()))
+        return movement->GetTarget() == owner;
+
+    return false;
 }
 
 static bool PositionOkay(Unit* owner, Unit* target, Optional<float> minDistance, Optional<float> maxDistance, Optional<ChaseAngle> angle)