add FXTimiInject

src/main/java/com/imyeyu/fx/TimiFX.java

@@ -295,6 +295,9 @@ public final class TimiFX {
 			if (flow == null) {
 				throw new UnsupportedOperationException("unsupported this control");
 			}
+			if (flow.getCellCount() == 0 || flow.getCell(0) == null) {
+				return;
+			}
 			int offset = Calc.floor(flow.getHeight() * .5 / flow.getCell(0).getHeight());
 			// 滚动
 			Method method = Ref.getMethod(control.getClass(), "scrollTo", int.class);