HTRACE-48 use -L 1 in format.sh to make it work on macosx
diff --git a/htrace-core/src/go/format.sh b/htrace-core/src/go/format.sh
index 6b1c8ae..01ea338 100755
--- a/htrace-core/src/go/format.sh
+++ b/htrace-core/src/go/format.sh
@@ -37,4 +37,4 @@
 
 # Find go sources.  We assume no newlines or whitespace in file names.
 SCRIPT_DIR="$(cd "$( dirname $0 )" && pwd)"
-find "${SCRIPT_DIR}" -noleaf -xdev -name '*.go' | xargs -l gofmt -w
+find "${SCRIPT_DIR}" -noleaf -xdev -name '*.go' | xargs -L 1 gofmt -w