`int typedef x` doesn't parse correctly

[ForNeVeR]

int typedef x; is a correct top-level statement, but Cesium is unable to process it.

The possible reason is Cesium.CodeGen.Ir.Declarations.IScopedDeclarationInfo.Of which checks the first specifier whether it is typedef.

[a-tk-by]

typedef may be in absolutely any position before alias, for example:

unsigned volatile int typedef *x;
long unsigned typedef long int *volatile*y;