Disables explosion effect for 0-range projectiles (fixes #3730)

apps/openmw/mwworld/worldimp.cpp

@@ -3275,6 +3275,9 @@ namespace MWWorld
             if (effectIt->mRange != rangeType || (effectIt->mArea <= 0 && !ignore.isEmpty() && ignore.getClass().isActor()))
                 continue; // Not right range type, or not area effect and hit an actor
 
+            if (fromProjectile && effectIt->mArea <= 0)
+                continue; // Don't play explosion for projectiles with 0-area effects
+
             if (!fromProjectile && effectIt->mRange == ESM::RT_Touch && (!ignore.isEmpty()) && (!ignore.getClass().isActor() && !ignore.getClass().canBeActivated(ignore)))
                 continue; // Don't play explosion for touch spells on non-activatable objects except when spell is from the projectile enchantment