[fix] : fixed typo

Author: Hayao0819

build.sh

@@ -547,7 +547,7 @@ make_pacman_conf() {
     msg_debug "Use ${build_pacman_conf}"
 
     if [[ "${nosigcheck}" = true ]]; then
-        sed -r "s|^#?\\s*SigLevel.+|SigLevel = Never|g" ${build_pacman_conf} > "${work_dir}/pacman-${arch}.conf"
+        sed -r "s|^#?\\s*SigLevel.+|SigLevel = Never|g" "${build_pacman_conf}" > "${work_dir}/pacman-${arch}.conf"
     else
         cp "${build_pacman_conf}" "${work_dir}/pacman-${arch}.conf"
     fi