Reset some static member variables in destructor

Some static member variables must be reset when the object is destroyed.

Author: Alrik Vidstrom

libraries/BlockDevices/SDCardBlockDevice.cpp

@@ -156,7 +156,10 @@ SDCardBlockDevice::SDCardBlockDevice(  pin_t _ck,
 /*                              DISTRUCTOR                                    */
 /* -------------------------------------------------------------------------- */
 SDCardBlockDevice::~SDCardBlockDevice() {
-   
+   // These static member variables must be reset when the oject is destroyed
+   SDCardBlockDevice::card_inserted = false;
+   SDCardBlockDevice::initialized = false;
+   SDCardBlockDevice::st = CmdStatus::IN_PROGRESS;   
 }
 
 /* -------------------------------------------------------------------------- */