Bugfix #3430

Using Proportional edit on a Lattice with option "Outside" crashed.
Was caused by not checking for the hide flag while counting amount
of transformed elements in Lattice.

source/blender/src/transform_conversions.c

@@ -1236,8 +1236,10 @@ static void createTransLatticeVerts(TransInfo *t)
 	bp= editLatt->def;
 	a= editLatt->pntsu*editLatt->pntsv*editLatt->pntsw;
 	while(a--) {
-		if(bp->f1 & 1) countsel++;
-		if(propmode) count++;
+		if(bp->hide==0) {
+			if(bp->f1 & 1) countsel++;
+			if(propmode) count++;
+		}
 		bp++;
 	}