Merge pull request #4800 from JakubValtar/fix-fx-curves

FX: Fix curveVertex drawing all curves together as one long curve

core/src/processing/javafx/PGraphicsFX2D.java

@@ -208,6 +208,7 @@ public class PGraphicsFX2D extends PGraphics {
   public void beginShape(int kind) {
     shape = kind;
     vertexCount = 0;
+    curveVertexCount = 0;
 
     workPath.reset();
     auxPath.reset();