libalpm: Set ret correctly in download_internal()

Immediately jump to the cleanup code after setting the return code to -1
in case rename() fails. Otherwise, it will be reset to 0 right after we
leave the if branch.

Signed-off-by: Lukas Fleischer <archlinux@cryptocrack.de>
Signed-off-by: Dan McGee <dan@archlinux.org>

lib/libalpm/dload.c

@@ -308,6 +308,7 @@ static int download_internal(const char *url, const char *localpath,
 		_alpm_log(PM_LOG_ERROR, _("could not rename %s to %s (%s)\n"),
 				tempfile, destfile, strerror(errno));
 		ret = -1;
+		goto cleanup;
 	}
 	ret = 0;