DisplayError can now use an optional exit code to quit the program

include/functions

@@ -533,13 +533,17 @@
     # Name        : DisplayError()
     # Description : Show error on screen
     #
-    # Input       : $1 = text (string)
+    # Input       : $1 = text (string), $2 = optional exit code (integer)
     # Returns     : <nothing>
     ################################################################################
 
     DisplayError() {
+        EXITCODE=""
+        if [ $# -gt 1 ]; then EXITCODE=$2; fi
+        ${ECHOCMD} ""
         ${ECHOCMD} "${WARNING}Error${NORMAL}: ${BOLD}$1${NORMAL}"
         ${ECHOCMD} ""
+        if [ ! -z "${EXITCODE}" ]; then ExitCustom ${EXITCODE}; fi
     }