e2fsck: Avoid core dump when using the -N option

This bug was accidentally introduced by commit 1dc506cb.

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>

diff --git a/e2fsck/unix.c b/e2fsck/unix.c
index 3eb3064..d3a8a2b 100644 (file)
--- a/e2fsck/unix.c
+++ b/e2fsck/unix.c
@@ -737,7 +737,7 @@ static errcode_t PRS(int argc, char *argv[], e2fsck_t *ret_ctx)
                        break;
 #endif
                case 'N':
-                       ctx->device_name = optarg;
+                       ctx->device_name = string_copy(ctx, optarg, 0);
                        break;
 #ifdef ENABLE_SWAPFS
                case 's':