pybootchartui: Fix python syntax issue

Fix:

scripts/pybootchartgui/pybootchartgui/parsing.py:134: SyntaxWarning: "is" with a literal. Did you mean "=="?
  if pid is 0:

(From OE-Core rev: c9a6511ae618035b8efad01646e37ba28ce1e3f8)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 1 insertions, 1 deletions

diff --git a/scripts/pybootchartgui/pybootchartgui/parsing.py b/scripts/pybootchartgui/pybootchartgui/parsing.py
index 362d5153e8..63a53b6b88 100644
--- a/scripts/pybootchartgui/pybootchartgui/parsing.py
+++ b/scripts/pybootchartgui/pybootchartgui/parsing.py
@@ -131,7 +131,7 @@ class Trace:
     def compile(self, writer):
 
         def find_parent_id_for(pid):
-            if pid is 0:
+            if pid == 0:
                 return 0
             ppid = self.parent_map.get(pid)
             if ppid: