Fix check_static_initializers failure behavior.

This regressed after crrev.com/c/2106349.

Bug: 1127003
Change-Id: I02633c4afadbee3c338d2bc7b4d7a04fac9e545a
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2405746
Commit-Queue: Erik Staab <estaab@chromium.org>
Commit-Queue: Nico Weber <thakis@chromium.org>
Reviewed-by: Nico Weber <thakis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#807634}

testing/scripts/check_static_initializers.py

@@ -110,6 +110,7 @@ def main_mac(src_dir):
           print('Expected <= %d static initializers in %s, but found %d' %
               (FALLBACK_EXPECTED_MAC_SI_COUNT, chromium_framework_executable,
                si_count))
+          ret = 1
           show_mod_init_func = os.path.join(mac_tools_path,
                                             'show_mod_init_func.py')
           args = [show_mod_init_func]