e4defrag: avoid unsuccessful return for an non-privileged user

If non-privileged user runs e4defrag, e4defrag returns an exit status
of 1 despite its success. This patch fixes this problem.

Signed-off-by: Kazuya Mio <k-mio@sx.jp.nec.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>

misc/e4defrag.c

@@ -2034,6 +2034,7 @@ int main(int argc, char *argv[])
 				if (!(mode_flag & DETAIL) &&
 						current_uid != ROOT_UID) {
 					printf(" Done.\n");
+					success_flag = 1;
 					continue;
 				}