The source formatter has a problem recognizing typedeffed return types. An example :

typedef int bar;

struct mybar {
    int a;
};

struct foo {
    int (*func1)(void);
    struct mybar * (*func2)(void);
    bar (*func3)(void);
};

is formatted as 

typedef int bar;

struct mybar {
    int a;
};

struct foo {
    int (*func1)(void);
    struct mybar * (*func2)(void);
    bar(*func3)(void);
};

It compiles (since the missing whitespace isn't required), but for the sake of consistancy, it needs a minor fix :)