Suppress error if gitconfig file does not exists (#3998)

* Suppress error if gitconfig file does not exists.

* Use grep

* Supress error

compile.sh

@@ -30,7 +30,7 @@ fi
 if [[ -f "${SRC}"/lib/general.sh ]]; then
 
 	# Declare this folder as safe
-	if [[ -z $(cat ${HOME}/.gitconfig | grep "directory = \*") ]]; then
+	if ! grep -q 2>/dev/null "directory = \*" "$HOME/.gitconfig"; then
 		git config --global --add safe.directory "*"
 	fi