*: merge some common strings

   text   data    bss    dec    hexfilename
 838650   8009      0 846659  ceb43busybox_old
 838519   8009      0 846528  ceac0busybox_unstripped

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
diff --git a/selinux/runcon.c b/selinux/runcon.c
index 8472b70..4afd111 100644
--- a/selinux/runcon.c
+++ b/selinux/runcon.c
@@ -59,13 +59,13 @@
 	if (!con)
 		bb_error_msg_and_die("'%s' is not a valid context", cur_context);
 	if (user && context_user_set(con, user))
-		bb_error_msg_and_die("failed to set new user '%s'", user);
+		bb_error_msg_and_die("can't set new user '%s'", user);
 	if (type && context_type_set(con, type))
-		bb_error_msg_and_die("failed to set new type '%s'", type);
+		bb_error_msg_and_die("can't set new type '%s'", type);
 	if (range && context_range_set(con, range))
-		bb_error_msg_and_die("failed to set new range '%s'", range);
+		bb_error_msg_and_die("can't set new range '%s'", range);
 	if (role && context_role_set(con, role))
-		bb_error_msg_and_die("failed to set new role '%s'", role);
+		bb_error_msg_and_die("can't set new role '%s'", role);
 
 	return con;
 }