Convert label coordinates to integers (expected type)

Author: PierreRaybaut

plotpy/items/label.py

@@ -453,7 +453,7 @@ def move_local_shape(self, old_pos: QPointF, new_pos: QPointF) -> None:
             lx += new_pos.x() - old_pos.x()
             ly += new_pos.y() - old_pos.y()
             self.C = lx, ly
-            self.labelparam.xc, self.labelparam.yc = lx, ly
+            self.labelparam.xc, self.labelparam.yc = int(lx), int(ly)
             lx0, ly0 = canvas_to_axes(self, old_pos)
             lx1, ly1 = canvas_to_axes(self, new_pos)
         else: