Cleared mixed spaces and tabs

examples/export-pdf.js

@@ -64,7 +64,7 @@ exportButton.addEventListener('click', function() {
       // Reset original map size
       map.setSize(size);
       map.getView().fit(extent,
-	    {size: size,
+        {size: size,
         constrainResolution: false});
       exportButton.disabled = false;
       document.body.style.cursor = 'auto';