[Bug 47149] New: widl generates invalid C headers when user-defined structs also have const typedef 'd names

https://bugs.winehq.org/show_bug.cgi?id=47149

Bug ID: 47149
           Summary: widl generates invalid C headers when user-defined
                    structs also have const typedef'd names
           Product: Wine
           Version: 4.6
          Hardware: x86
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: tools
          Assignee: [e-mail]
          Reporter: [e-mail]
      Distribution: ---

Found this one while working on patch for #47035

With an idl snippet like so:

struct foo {};
typedef struct foo foo_t;
typedef const struct foo cfoo_t;

the generated header will contain:

struct foo {
};
typedef struct foo foo_t;
// redefinition of struct foo and discards const qualifier
typedef struct foo {
} cfoo_t;

This bug seems like it will be fixed once the patch for #47035 lands.