[L3GD20] Added braces

src/tests/drivers/test-l3gd20-fifo.cpp

@@ -95,7 +95,9 @@ void __attribute__((used)) EXTI2_IRQHandlerImpl()
     last_watermark_tick = tick;
     // Pass tick microseconds to sensor
     if (gyro != nullptr)
+    {
         gyro->IRQupdateTimestamp(hrclock.toIntMicroSeconds(tick));
+    }
 
     EXTI->PR |= EXTI_PR_PR2;  // Reset pending register
 }