findmissing: Make repo upload happy

Apparently additional checks have been added to the uploader
since the last commit. Fix all reported errors prior to the next commit.

BUG=b:215375528
TEST=Upload using "repo upload" succeeds

Change-Id: I451bab3c81cc4a6da0ff7bde81fd3cfe28a182c6
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/dev-util/+/3405074
Reviewed-by: Curtis Malainey <cujomalainey@chromium.org>
Commit-Queue: Guenter Roeck <groeck@chromium.org>
Tested-by: Guenter Roeck <groeck@chromium.org>
diff --git a/contrib/findmissing/git_interface.py b/contrib/findmissing/git_interface.py
index 3f1c1f0..beb9830 100755
--- a/contrib/findmissing/git_interface.py
+++ b/contrib/findmissing/git_interface.py
@@ -165,7 +165,7 @@
 class commitHandler:
     """Class to control active accesses on a git repository"""
 
-    commit_list = { }
+    commit_list = {}
 
     def __init__(self, kernel, branch=None, full_reset=True):
         self.kernel = kernel
@@ -179,7 +179,7 @@
         self.full_reset = full_reset
 
         if kernel not in self.commit_list:
-            self.commit_list[kernel] = { }
+            self.commit_list[kernel] = {}
 
         current_branch_cmd = ['symbolic-ref', '-q', '--short', 'HEAD']
         self.current_branch = self.__git_check_output(current_branch_cmd).rstrip()