Silence some more cloesed file warnings

Author: jenshnielsen

lib/matplotlib/backends/backend_ps.py

@@ -90,12 +90,13 @@ def gs_version(self):
             pass
 
         from matplotlib.compat.subprocess import Popen, PIPE
-        pipe = Popen(self.gs_exe + " --version",
-                     shell=True, stdout=PIPE).stdout
+        s = Popen(self.gs_exe + " --version",
+                     shell=True, stdout=PIPE)
+        pipe, stderr = s.communicate()
         if six.PY3:
-            ver = pipe.read().decode('ascii')
+            ver = pipe.decode('ascii')
         else:
-            ver = pipe.read()
+            ver = pipe
         gs_version = tuple(map(int, ver.strip().split(".")))
 
         self._cached["gs_version"] = gs_version

lib/matplotlib/tests/test_backend_ps.py

@@ -40,6 +40,8 @@ def _test_savefig_to_stringio(format='ps'):
 
     assert values[0] == values[1]
     assert values[1] == values[2].replace(b'\r\n', b'\n')
+    for buffer in buffers:
+        buffer.close()
 
 
 @cleanup
@@ -80,4 +82,4 @@ def test_savefig_to_stringio_with_usetex_eps():
 
 if __name__ == '__main__':
     import nose
-    nose.runmodule(argv=['-s', '--with-doctest'], exit=False)
+    nose.runmodule(argv=['-s', '--with-doctest', '-verbose'], exit=False)