minor refactor: one flag accidentally dropped

Author: paulk-asert

src/main/java/org/codehaus/groovy/runtime/FormatHelper.java

@@ -130,7 +130,7 @@ public static String format(Object arguments, boolean verbose) {
      * @return a formatted string representation
      */
     public static String format(Object arguments, boolean inspect, boolean escapeBackslashes) {
-        return format(arguments, inspect, -1);
+        return format(arguments, inspect, escapeBackslashes, -1);
     }
 
     /**