WiFi.firmwareVersion: try to mount wifi fs only if needed

Author: pennam

libraries/WiFi/src/WiFi.cpp

@@ -366,12 +366,17 @@ wiced_result_t whd_firmware_check_hook(const char* mounted_name, int mount_err)
 
 #include "whd_version.h"
 const char* arduino::WiFiClass::firmwareVersion() {
-  if ((wiced_filesystem_init() != WICED_ERROR) && (wiced_filesystem_mount_default() != WICED_ERROR)) {
-    if (firmware_available) {
-      return WHD_VERSION;
-    }
+  if (!firmware_available) {
+    /* Try to mount WiFi firmware filesystem */
+    wiced_filesystem_init();
+    wiced_filesystem_mount_default();
+  }
+
+  if (firmware_available) {
+    return WHD_VERSION;
+  } else {
+    return "v0.0.0";
   }
-  return "v0.0.0";
 }
 
 arduino::WiFiClass WiFi(WiFiInterface::get_default_instance());