drivers: can: mcp2515: terminate if...else if construct with an else

Terminate the if...else if construct with an else block in order to adhere
to coding guidelines.

Signed-off-by: Henrik Brix Andersen <[email protected]>

Author: henrikbrixandersen

drivers/can/can_mcp2515.c

@@ -847,6 +847,8 @@ static void mcp2515_handle_interrupts(const struct device *dev)
 		} else if (ret == 0) {
 			/* All interrupt flags handled */
 			break;
+		} else {
+			/* Interrupts still pending */
 		}
 	}
 }