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/gm/imagesource2.cpp b/gm/imagesource2.cpp
index db8a9f6..3a3d273 100644
--- a/gm/imagesource2.cpp
+++ b/gm/imagesource2.cpp
@@ -47,7 +47,7 @@
         int curColor = 0;
 
         for (int x = 0; x < kImageSize; x += 3) {
-            SkRect r = SkRect::MakeXYWH(SkIntToScalar(x), SkIntToScalar(0), 
+            SkRect r = SkRect::MakeXYWH(SkIntToScalar(x), SkIntToScalar(0),
                                         SkIntToScalar(3), SkIntToScalar(kImageSize));
             SkPaint p;
             p.setColor(gColors[curColor]);