Avoid negative _claims

4 months ago · 39fb2902ec
1 changed files with 3 additions and 2 deletions
--- a/src/helpers/RefCountedDigitalPin.h
+++ b/src/helpers/RefCountedDigitalPin.h
@ -22,10 +22,11 @@ public:
  }

  void release() {
+    if (_claims == 0) return; // avoid negative _claims
+
+    _claims--;
    if (_claims == 0) {
      digitalWrite(_pin, !_active);
-    } else {
-      _claims--;
    }
  }
 };