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/samplecode/SampleFilterQuality.cpp b/samplecode/SampleFilterQuality.cpp
index ee99845..2c3eb4c 100644
--- a/samplecode/SampleFilterQuality.cpp
+++ b/samplecode/SampleFilterQuality.cpp
@@ -54,7 +54,7 @@
 
     SkPaint paint;
     paint.setShader(make_shader(SkRect::MakeWH(N, N)));
-    
+
     canvas->drawPath(path, paint);
     return surface->makeImageSnapshot();
 }
@@ -63,7 +63,7 @@
     const SkScalar S = 16;    // amount to scale up
     const int D = 2;    // dimension scaling for the offscreen
     // since we only view the center, don't need to produce the entire thing
-    
+
     SkImageInfo info = SkImageInfo::MakeN32(orig->width() * D, orig->height() * D,
                                             kOpaque_SkAlphaType);
     auto surface(origSurf->makeSurface(info));
@@ -73,7 +73,7 @@
     canvas->translate(-SkScalarHalf(orig->width()) * (S - D) / S,
                       -SkScalarHalf(orig->height()) * (S - D) / S);
     canvas->drawImage(orig, 0, 0, nullptr);
-    
+
     if (S > 3) {
         SkPaint paint;
         paint.setColor(SK_ColorWHITE);