\r does not round-trip the local socket, escape and restore on the other side (#43507)

bin/ansible-connection

@@ -214,6 +214,8 @@ def main():
                 raise Exception("EOF found before vars data was complete")
             vars_data += cur_line
             cur_line = stdin.readline()
+        # restore escaped loose \r characters
+        vars_data = vars_data.replace(br'\r', b'\r')
 
         if PY3:
             pc_data = cPickle.loads(init_data, encoding='bytes')