py2: amari.xlog: test_ReverseLineReader: Explicitly make linev to be unicode

Else this test breaks with UnicodeDecodeError when e.g. preparing tdata.

amari/xlog_test.py

@@ -322,6 +322,7 @@ def test_ReverseLineReader():
         '𩸽𩹨',             # 4-bytes ----//----
         '{"message":"hello"}',
     ]
+    linev = list(_.decode('utf-8') for _ in linev)
 
     tdata = '\n'.join(linev) + '\n'     # text
     bdata = tdata.encode('utf-8')       # binary