fix working dir location

cros_repoinit.sh

@@ -2,9 +2,12 @@
 
 #
 # Create working directory 
-# somehow there's a space char when expect argument
 _working_dir_name=$1
-_working_dir_name=${_working_dir_name::-1}
+
+if [ ${_working_dir_name: -1} = " " ]; then
+    #somehow there's a space char when expect argument
+    _working_dir_name=${_working_dir_name::-1}
+fi
 
 _mydir="$(pwd)"
 _parentdir="$(dirname "$_mydir")"