Issue #20244: Fixed possible file leaks when unexpected error raised in

tarfile open functions.

Lib/tarfile.py

@@ -1671,6 +1671,9 @@ class TarFile(object):
             if mode == 'r':
                 raise ReadError("not a bzip2 file")
             raise
+        except:
+            fileobj.close()
+            raise
         t._extfileobj = False
         return t
 
@@ -1696,6 +1699,9 @@ class TarFile(object):
             if mode == 'r':
                 raise ReadError("not an lzma file")
             raise
+        except:
+            fileobj.close()
+            raise
         t._extfileobj = False
         return t