restore the type of the parameter flags of getnameinfo to c_int

Author: kolapapa

src/unix/uclibc/mod.rs

@@ -2326,7 +2326,7 @@ extern "C" {
         hostlen: ::socklen_t,
         serv: *mut ::c_char,
         sevlen: ::socklen_t,
-        flags: ::c_uint,
+        flags: ::c_int,
     ) -> ::c_int;
 }