[pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

gmlc/libguarded/deferred_guarded.hpp

@@ -194,10 +194,9 @@ auto call_returning_future(Func& func, T& data) ->
 }
 
 template<typename Ret, typename T, typename Func>
-auto package_task_void(Func&& func) ->
-    typename std::enable_if<
-        std::is_same<Ret, void>::value,
-        std::pair<std::unique_ptr<task_runner<T>>, std::future<void>>>::type
+auto package_task_void(Func&& func) -> typename std::enable_if<
+    std::is_same<Ret, void>::value,
+    std::pair<std::unique_ptr<task_runner<T>>, std::future<void>>>::type
 {
     auto vtask = std::unique_ptr<void_runner<T>>(new void_runner<T>(
         std::packaged_task<void(T&)>(std::forward<Func>(func))));
@@ -206,10 +205,9 @@ auto package_task_void(Func&& func) ->
 }
 
 template<typename Ret, typename T, typename Func>
-auto package_task_void(Func&& func) ->
-    typename std::enable_if<
-        !std::is_same<Ret, void>::value,
-        std::pair<std::unique_ptr<task_runner<T>>, std::future<Ret>>>::type
+auto package_task_void(Func&& func) -> typename std::enable_if<
+    !std::is_same<Ret, void>::value,
+    std::pair<std::unique_ptr<task_runner<T>>, std::future<Ret>>>::type
 {
     auto ttask = std::unique_ptr<type_runner<T, Ret>>(new type_runner<T, Ret>(
         std::packaged_task<Ret(T&)>(std::forward<Func>(func))));