Fix spinned function not returning exit codes

hack/bootstrap_tfw_dev.sh

@@ -145,6 +145,7 @@ spinned()
         done
     done
     echo -ne "\b"
+    wait $pid
 }
 
 run

hack/oneline_install.sh

@@ -1 +1 @@
-URL=https://git.io/vxBfj SHA=4cafb766699ed93a6dcb0f806b0aa7b2d677285e0bdd137c74d8ef34a4a51284 bash -c 'cmd="$(curl -fsSL $URL)" && [ $(echo "$cmd" | sha256sum | cut -d " " -f1) == $SHA ] && echo "$cmd" | bash || echo Checksum mismatch!'
+URL=https://git.io/vxBfj SHA=8594a813cdc4fd080e6b52c7cba2b41f99aa4f6bb09096d76397e7d07422b341 bash -c 'cmd="$(curl -fsSL $URL)" && [ $(echo "$cmd" | sha256sum | cut -d " " -f1) == $SHA ] && echo "$cmd" | bash || echo Checksum mismatch!'