fixed small bug #43

[tonyrewin]

#43

[V1EngineeringInc]

Worked for me.

[waymond91]

Is there a reason this isnt going in?
I cant get a build to work without using this fix.
Am I using the wrong source?

.pio/libdeps/esp32dev/LittleFS_esp32/src/esp_littlefs.c:19:2: warning: #warning ("Use the built-in LITTLEFS library") [-Wcpp]
 #warning("Use the built-in LITTLEFS library")
  ^~~~~~~
Archiving .pio/build/esp32dev/libe19/libSPIFFS.a
Archiving .pio/build/esp32dev/lib6b2/libSD_MMC.a
Indexing .pio/build/esp32dev/libe19/libSPIFFS.a
Indexing .pio/build/esp32dev/lib6b2/libSD_MMC.a
Compiling .pio/build/esp32dev/lib7dc/LittleFS_esp32/lfs_util.c.o
Compiling .pio/build/esp32dev/lib7dc/LittleFS_esp32/littlefs_api.c.o
Compiling .pio/build/esp32dev/lib9d2/Preferences/Preferences.cpp.o
.pio/libdeps/esp32dev/LittleFS_esp32/src/LITTLEFS.cpp: In member function 'virtual bool LITTLEFSImpl::exists(const char*)':
.pio/libdeps/esp32dev/LittleFS_esp32/src/LITTLEFS.cpp:44:28: error: no matching function for call to 'LITTLEFSImpl::open(const char*&, const char [2])'
     File f = open(path, "r");
                            ^
In file included from .pio/libdeps/esp32dev/LittleFS_esp32/src/LITTLEFS.cpp:17:
/Users/brett/.platformio/packages/framework-arduinoespressif32/libraries/FS/src/vfs_api.h:38:17: note: candidate: 'virtual fs::FileImplPtr VFSImpl::open(const char*, const char*, bool)'
     FileImplPtr open(const char* path, const char* mode, const bool create) override;
                 ^~~~
/Users/brett/.platformio/packages/framework-arduinoespressif32/libraries/FS/src/vfs_api.h:38:17: note:   candidate expects 3 arguments, 2 provided
Compiling .pio/build/esp32dev/libfd1/Update/HttpsOTAUpdate.cpp.o
Compiling .pio/build/esp32dev/libfd1/Update/Updater.cpp.o
*** [.pio/build/esp32dev/lib7dc/LittleFS_esp32/LITTLEFS.cpp.o] Error 1