Fixes a crash when you favorite a node

src/mesh/MeshService.cpp

@@ -137,12 +137,17 @@ void MeshService::loop()
 /// The radioConfig object just changed, call this to force the hw to change to the new settings
 void MeshService::reloadConfig(int saveWhat)
 {
-    // If we can successfully set this radio to these settings, save them to disk
+    // Only LoRa config and channels (freq/PSK/slot) affect the radio. Saves that only touch
+    // module config, device state, or the node database (e.g. favoriting a node) have no reason
+    // to re-init the LoRa chip - skip it there to avoid an unnecessary and risky SPI reconfigure.
+    if (saveWhat & (SEGMENT_CONFIG | SEGMENT_CHANNELS)) {
+        // If we can successfully set this radio to these settings, save them to disk
 
-    // This will also update the region as needed
-    nodeDB->resetRadioConfig(); // Don't let the phone send us fatally bad settings
+        // This will also update the region as needed
+        nodeDB->resetRadioConfig(); // Don't let the phone send us fatally bad settings
 
-    configChanged.notifyObservers(NULL); // This will cause radio hardware to change freqs etc
+        configChanged.notifyObservers(NULL); // This will cause radio hardware to change freqs etc
+    }
     nodeDB->saveToDisk(saveWhat);
 }