Fix wrong cat

calculate/lib/utils/files.py

@@ -276,9 +276,12 @@ class typeFile:
         # fix for kernel 3.7.7 (bad work samba)
         if ret is None and self.magicObject.errno() == 5:
             r,w = os.pipe()
-            cat = subprocess.Popen(['/bin/cat',filename],stdout=w)
+            devnull = os.open(os.devnull,os.O_WRONLY)
+            cat = subprocess.Popen(['/bin/cat',filename],stdout=w,
+                    stderr=devnull)
             ret = self.magicObject.descriptor(r)
             os.close(w)
+            os.close(devnull)
             cat.poll()
         return ret