files: Move fle_init() to files.c

It has only one user. Also, in next patches will be
used pstree_item_by_virt() function, and I don't
want to add "#include" to "files.h" for it, and to
nest headers.
Signed-off-by: Kirill Tkhai <ktkhai@virtuozzo.com>
Signed-off-by: Andrei Vagin <avagin@virtuozzo.com>

criu/files.c

@@ -692,6 +692,14 @@ int rst_file_params(int fd, FownEntry *fown, int flags)
 	return 0;
 }
 
+static void fle_init(struct fdinfo_list_entry *fle, int pid, FdinfoEntry *fe)
+{
+	fle->pid = pid;
+	fle->fe = fe;
+	fle->received = 0;
+	fle->stage = FLE_INITIALIZED;
+}
+
 static int collect_fd(int pid, FdinfoEntry *e, struct rst_info *rst_info)
 {
 	struct fdinfo_list_entry *le, *new_le;

criu/include/files.h

@@ -89,14 +89,6 @@ struct fdinfo_list_entry {
 	u8			stage:3;
 };
 
-static inline void fle_init(struct fdinfo_list_entry *fle, int pid, FdinfoEntry *fe)
-{
-	fle->pid = pid;
-	fle->fe = fe;
-	fle->received = 0;
-	fle->stage = FLE_INITIALIZED;
-}
-
 /* reports whether fd_a takes prio over fd_b */
 static inline int fdinfo_rst_prio(struct fdinfo_list_entry *fd_a, struct fdinfo_list_entry *fd_b)
 {