fixed broken "y" direction for DropCutter

git-svn-id: https://pycam.svn.sourceforge.net/svnroot/pycam/trunk@510 bbaffbd6-741e-11dd-a85d-61de82d9cad9

src/pycam/PathGenerators/DropCutter.py

@@ -95,7 +95,7 @@ class DropCutter:
         else:
             # first y, then x
             for y in y_steps:
-                grid.append(zip(x_steps, [y] * (len(y_steps) + 1)))
+                grid.append(zip(x_steps, [y] * (len(x_steps) + 1)))
             dim_attrs = ["y", "x"]
 
         num_of_lines = len(grid) + 1