address @jef-n 's comment

Author: nirvn

src/providers/wms/qgstilescalewidget.cpp

@@ -106,7 +106,7 @@ void QgsTileScaleWidget::mSlider_valueChanged( int value )
   QgsDebugMsg( QString( "slider released at %1: %2" ).arg( mSlider->value() ).arg( mResolutions.at( mSlider->value() ) ) );
 
   // Invert value in tooltip to match expectation (i.e. 0 = zoomed out, maximum = zoomed in)
-  QToolTip::showText( QCursor::pos(), QString( "Zoom level: %1\nResolution: %2" ).arg( mSlider->maximum() - value ).arg( mResolutions.at( value ) ), this );
+  QToolTip::showText( QCursor::pos(), tr( "Zoom level: %1" ).arg( mSlider->maximum() - value ) + "\n" + tr( "Resolution: %2" ).arg( mResolutions.at( value ) ), this );
   mMapCanvas->zoomByFactor( mResolutions.at( mSlider->value() ) / mMapCanvas->mapUnitsPerPixel() );
 }