UHT fails to parse non-inlined UFUNCTION with RESTRICT keyword in parameter list

When you have a non-inlined ufunction, UHT fails to parse the restrict keyword in its parameter list.

Note: The following compiles (notice that the only change is the use of the FORCEINLINE keyword):

FORCEINLINE UFUNCTION()

void TestFunction(const FVector& RESTRICT Location1, const FVector& RESTRICT Location2){}

The following would also compile (notice the removal the UFUNCTION() specifier):

void TestFunction(const FVector& RESTRICT Location1, const FVector& RESTRICT Location2)
{}

1. Create a new blank C++ project in Unreal.
2. Create a new C++ class of type Actor
3. Within the Actor's header file, declare the following function. 

 UFUNCTION()
void TestFunction(const FVector& RESTRICT Location1, const FVector& RESTRICT Location2);

Result: error : Missing ')' in parameter list

Expected: No error expected