fix [#28336] Particles: setting to zero the count of all elements of a group crashes Blender

source/blender/blenkernel/intern/anim.c

@@ -1351,6 +1351,10 @@ static void new_particle_duplilist(ListBase *lb, ID *id, Scene *scene, Object *p
 				continue;
 
 			if(part->ren_as==PART_DRAW_GR) {
+				/* prevent divide by zero below [#28336] */
+				if(totgroup == 0)
+					continue;
+
 				/* for groups, pick the object based on settings */
 				if(part->draw&PART_DRAW_RAND_GR)
 					b= BLI_rand() % totgroup;