Fix Windows build
To do pollset work we need grpc to be initialized
diff --git a/test/core/security/credentials_test.c b/test/core/security/credentials_test.c
index d6febf5..5eb6118 100644
--- a/test/core/security/credentials_test.c
+++ b/test/core/security/credentials_test.c
@@ -1096,6 +1096,7 @@
int main(int argc, char **argv) {
grpc_test_init(argc, argv);
+ grpc_init();
test_empty_md_store();
test_ref_unref_empty_md_store();
test_add_to_empty_md_store();
@@ -1126,5 +1127,6 @@
test_metadata_plugin_success();
test_metadata_plugin_failure();
test_get_well_known_google_credentials_file_path();
+ grpc_shutdown();
return 0;
}