install: unbreak installation with Python 3.7 (os.errno)

The os.errno module has not been an official feature. Python 3.7
removed the corresponding import. This broke the installation of
decoders. Prefer 'errno' over 'os.errno'.

1 files changed, 2 insertions, 1 deletions

diff --git a/tools/install-decoders b/tools/install-decoders
index 3772bd5..30360db 100755
--- a/tools/install-decoders
+++ b/tools/install-decoders
@@ -18,6 +18,7 @@
 ## along with this program; if not, see <http://www.gnu.org/licenses/>.
 ##
 
+import errno
 import os
 import sys
 from shutil import copy
@@ -64,7 +65,7 @@ def install(srcdir, dstdir, s):
         try:
             os.mkdir(pd_dst)
         except OSError as e:
-            if e.errno != os.errno.EEXIST:
+            if e.errno != errno.EEXIST:
                 raise
             else:
                 pass