[Cocci] adding function declarations

[christof@warlich.name (Christof Warlich)]

 > Shouldn't the static also be in the definition? julia

As much as g++ is concerned, the static may or may not be part of the 
definition: At least the following

$ cat xxx.cc
static inline int f();
int f(void) {
     return 0;
}

compiles fine with

$ g++ -c -Wall -Wextra -Weffc++ -Wpedantic xxx.cc