3.0.0b1 generates misnamed PyMemoryview_Check function call

[totaam]

Describe the bug

Compilation error:

error: implicit declaration of function ‘PyMemoryview_Check’; did you mean ‘PyMemoryView_Check’? [-Werror=implicit-function-declaration]
32216 |   __pyx_t_1 = PyMemoryview_Check(__pyx_v_pixels);
      |               ^~~~~~~~~~~~~~~~~~
      |               PyMemoryView_Check

As gcc suggests, the correct function spelling is PyMemoryView_Check with an uppercase V.
Manually editing the .c file allows the compilation to succeed.

Code to reproduce the behaviour:

  /* "xpra/codecs/nvidia/nvenc/encoder.pyx":2436
 *         if isinstance(pixels, (bytearray, bytes)):
 *             pixels = memoryview(pixels)
 *         if isinstance(pixels, memoryview):             # <<<<<<<<<<<<<<
 *             #copy memoryview to inputBuffer directly:
 *             buf = self.inputBuffer
 */
  __pyx_t_1 = PyMemoryview_Check(__pyx_v_pixels); 
  if (__pyx_t_1) {

Expected behaviour

Compilation should succeed, it did with 3.0.0a11 so this is a recent regression.

Environment

Reproducible on many different Linux distros.

Additional context

No response

[da-woods]

Thanks. MemoryViews are now a "known" builtin type in Cython so they're handled slightly differently.

Just working on fixing this (and another memoryview issue). Should be pretty easy