cros_build_lib.run: clean up error_code_ok->check migration

BUG=chromium:1006587
TEST=`./run_tests` passes

Change-Id: Ie416c5f7b16314a34a3a53f503469b3cc93fb9e2
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/chromite/+/1965957
Commit-Queue: Mike Frysinger <vapier@chromium.org>
Tested-by: Mike Frysinger <vapier@chromium.org>
Reviewed-by: Chris McDonald <cjmcdonald@chromium.org>
diff --git a/scripts/cros_fuzz.py b/scripts/cros_fuzz.py
index ff6179e..9971951 100644
--- a/scripts/cros_fuzz.py
+++ b/scripts/cros_fuzz.py
@@ -969,7 +969,7 @@
       command,
       extra_env=GetFuzzExtraEnv(),
       debug_level=logging.INFO,
-      error_code_ok=True).returncode
+      check=False).returncode
 
 
 def StripFuzzerPrefixes(fuzzer_name):