Silence shellcheck SC2086 in run_trunnel.sh

scripts/codegen/run_trunnel.sh

@@ -10,7 +10,7 @@ OPTIONS="--require-version=1.5.1"
 # Get all .trunnel files recursively from that directory so we can support
 # multiple sub-directories.
 for file in `find ./src/trunnel/ -name '*.trunnel'`; do
-  python -m trunnel ${OPTIONS} $file
+  python -m trunnel ${OPTIONS} "$file"
 done
 
 python -m trunnel ${OPTIONS} --write-c-files --target-dir=./src/ext/trunnel/