Drop should never panic; remove unwrap from SpiDriver Drop

CHANGELOG.md

@@ -43,6 +43,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - CAN: fix wrong Alert enum indexing / remove wrong TryFromPrimitive derive (#532)
 - GPIO: Allow interoperability with other code that initializes the GPIO ISR service (#537)
 - SD card support is no longer behind the `experimental` feature
+- SPI: Do not crash in SpiDriver::Drop implementation.
 
 ## [0.45.2] - 2025-01-15
 

src/spi.rs

@@ -648,7 +648,9 @@ impl<'d> SpiDriver<'d> {
 
 impl Drop for SpiDriver<'_> {
     fn drop(&mut self) {
-        esp!(unsafe { spi_bus_free(self.host()) }).unwrap();
+        if let Err(e) = esp!(unsafe { spi_bus_free(self.host()) }) {
+            ::log::error!("Unable to free spi bus: {e:?}");
+        }
     }
 }