CNetIf: suppress unused variable warning in getBSSID dummy implementation

Author: pennam

libraries/lwIpWrapper/src/CNetIf.h

@@ -208,7 +208,7 @@ class CNetIf {
 
     /* default dummy implementation because ethernet does not have that */
     virtual const char* getSSID() { return nullptr; }
-    virtual uint8_t* getBSSID(uint8_t* bssid) { return nullptr; }
+    virtual uint8_t* getBSSID(uint8_t* bssid) { (void)bssid; return nullptr; }
     virtual int32_t getRSSI() { return 0; }
     virtual uint8_t getEncryptionType() { return 0; }