Fix crash on SD.end() without initial SD.begin() (#2222)

Fixes #2220

Fix crash on SD.end() without initial SD.begin() (#2222)
Fixes #2220
4ab0ba61 · Earle F. Philhower, III · GitHub · eb0badd8 · 4ab0ba61
Unverified Commit 4ab0ba61 authored Jun 11, 2024 by Earle F. Philhower, III Committed by GitHub Jun 11, 2024
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libraries/SD/src/SD.h libraries/SD/src/SD.h +3 -2

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--- a/libraries/SD/src/SD.h
+++ b/libraries/SD/src/SD.h
@@ -43,8 +43,9 @@ public:

    void end(bool endSPI = true) {
        SDFS.end();
-        if (endSPI) {
+        if (endSPI && _spi) {
            _spi->end();
+            _spi = nullptr;
        }
    }

@@ -205,7 +206,7 @@ private:
        return time(nullptr);
    }

-    HardwareSPI *_spi;
+    HardwareSPI *_spi = nullptr;
 };