files: Open-code MAKE_GEN_ID macro into its single caller

Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

cr-dump.c

@@ -188,7 +188,7 @@ static int collect_fds(pid_t pid, struct parasite_drain_fd *dfds)
 
 static u32 make_gen_id(const struct fd_parms *p)
 {
-	return MAKE_FD_GENID(p->stat.st_dev, p->stat.st_ino, p->pos);
+	return ((u32)p->stat.st_dev) ^ ((u32)p->stat.st_ino) ^ ((u32)p->pos);
 }
 
 int do_dump_gen_file(struct fd_parms *p, int lfd,

include/file-ids.h

@@ -10,9 +10,6 @@
 #define FD_PID_INVALID		(-2U)
 #define FD_DESC_INVALID		(-3U)
 
-#define MAKE_FD_GENID(dev, ino, pos) \
-	(((u32)(dev) ^ (u32)(ino) ^ (u32)(pos)))
-
 struct fdinfo_entry;
 extern int fd_id_generate(pid_t pid, FdinfoEntry *fe);
 extern u32 fd_id_generate_special(void);