[klibc] chroot: Fix expected behaviour

/usr/lib/klibc/bin/chroot / sh
execve: No such file or directory
/usr/lib/klibc/bin/chroot / /bin/pwd
/home/max

./src/klibc/usr/utils/static/chroot / pwd
/

Cc: Colin Watson <cjwatson@ubuntu.com>
Signed-off-by: maximilian attems <max@stro.at>
diff --git a/usr/utils/chroot.c b/usr/utils/chroot.c
index e3e6791..bc1b94f 100644
--- a/usr/utils/chroot.c
+++ b/usr/utils/chroot.c
@@ -16,8 +16,13 @@
 		return 1;
 	}
 
-	if (execve(argv[2], argv + 2, envp) == -1) {
-		perror("execve");
+	if (chdir("/") == -1) {
+		perror("chdir");
+		return 1;
+	}
+
+	if (execvp(argv[2], argv + 2) == -1) {
+		perror("execvp");
 		return 1;
 	}