Fix ps distillation (mpl helpers take strs, not Paths).

Author: anntzer

lib/mplcairo/base.py

@@ -301,8 +301,8 @@ def _print_ps_impl(self, is_eps, path_or_stream, *,
                 {"ghostscript": backend_ps.gs_distill,
                  "xpdf": backend_ps.xpdf_distill}[
                      mpl.rcParams["ps.usedistiller"]](
-                         tmp_name, False, ptype=papertype)
-                with open(tmp_name, "rb") as tmp_file, \
+                         str(tmp_name), False, ptype=papertype)
+                with tmp_name.open("rb") as tmp_file, \
                      cbook.open_file_cm(path_or_stream, "wb") as stream:
                     shutil.copyfileobj(tmp_file, stream)
         else: