Remove braces around scalar initialization
Remove braces around scalar initialization

Summary: Fix clang compile error in thpp/test build

Reviewed By: soumith

Differential Revision: D2886167

fb-gh-sync-id: 8dc4ca66086525655157b850f9fb5db25fe8af94
shipit-source-id: 8dc4ca66086525655157b850f9fb5db25fe8af94

apaszke/thpp,apaszke/thpp