Auto merge of rust-lang#116160 - MaxHearnden:quote-syntax-check, r=Mark-Simulacrum

quote argument to sh -n

This prevents glob expansion (*.py) and field splitting

Author: bors

x

@@ -8,7 +8,7 @@
 set -eu
 
 # syntax check
-sh -n $0
+sh -n "$0"
 
 realpath() {
     if [ -d "$1" ]; then