Fix code isFileOk -> isFileOk()

Author: faisalman

src/SimpleExcel/Parser/CSVParser.php

@@ -35,7 +35,7 @@ class CSVParser extends BaseParser implements IParser
     */
     public function loadFile($file_path){
 
-        if (!$this->isFileOk) {
+        if (!$this->isFileOk($file_path)) {
             return;
         }
 

src/SimpleExcel/Parser/HTMLParser.php

@@ -69,7 +69,7 @@ private function parseDOM($html){
     */
     public function loadFile($file_path) {
 
-        if (!$this->isFileOk) {
+        if (!$this->isFileOk($file_path)) {
             return;
         }
 

src/SimpleExcel/Parser/JSONParser.php

@@ -27,7 +27,7 @@ class JSONParser extends BaseParser implements IParser
     */
     public function loadFile($file_path) {
 
-        if (!$this->isFileOk) {
+        if (!$this->isFileOk($file_path)) {
             return;
         }
 

src/SimpleExcel/Parser/XMLParser.php

@@ -298,7 +298,7 @@ private function parseDOM($xml){
     */
     public function loadFile($file_path) {
 
-        if (!$this->isFileOk) {
+        if (!$this->isFileOk($file_path)) {
             return;
         }