logger: use next() to iterate over log lines (#36515)

wcs/qommon/logger.py

@@ -98,16 +98,16 @@ def parse_logstream(stream):
     non-blank character continue until the lines does not start with a blank
     character
     '''
-    line = stream.next()
+    line = next(stream)
     while True:
         r = readline(line)
         try:
             # Skip badly formatted lines
             if r is None:
-                line = stream.next()
+                line = next(stream)
                 continue
             while True:
-                line = stream.next()
+                line = next(stream)
                 if line.startswith(' '):
                     # Append the line without the first blank
                     r['message'] = r['message'] + line[1:]