Style bikeshed - remove extraneous whitespace

GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1842753002

Review URL: https://codereview.chromium.org/1842753002
diff --git a/src/gpu/GrRectanizer_skyline.h b/src/gpu/GrRectanizer_skyline.h
index 576b1fc..a1c571e 100644
--- a/src/gpu/GrRectanizer_skyline.h
+++ b/src/gpu/GrRectanizer_skyline.h
@@ -49,7 +49,7 @@
 
     // Can a width x height rectangle fit in the free space represented by
     // the skyline segments >= 'skylineIndex'? If so, return true and fill in
-    // 'y' with the y-location at which it fits (the x location is pulled from 
+    // 'y' with the y-location at which it fits (the x location is pulled from
     // 'skylineIndex's segment.
     bool rectangleFits(int skylineIndex, int width, int height, int* y) const;
     // Update the skyline structure to include a width x height rect located