sslsniff: fix comparing bytes to string

Signed-off-by: keyolk <chanhun.jeong@navercorp.com>
diff --git a/tools/sslsniff.py b/tools/sslsniff.py
index f5a2279..0200750 100755
--- a/tools/sslsniff.py
+++ b/tools/sslsniff.py
@@ -197,7 +197,7 @@
 
     # Filter events by command
     if args.comm:
-        if not args.comm == event.comm:
+        if not args.comm == event.comm.decode('utf-8', 'replace'):
             return
 
     if start == 0: