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/drawbitmaprect.cpp b/gm/drawbitmaprect.cpp
index 883e81b..7d83047 100644
--- a/gm/drawbitmaprect.cpp
+++ b/gm/drawbitmaprect.cpp
@@ -35,7 +35,7 @@
 
 static sk_sp<SkImage> makebm(SkCanvas* origCanvas, SkBitmap* resultBM, int w, int h) {
     SkImageInfo info = SkImageInfo::MakeN32Premul(w, h);
-    
+
     auto surface(origCanvas->makeSurface(info));
     if (nullptr == surface) {
         // picture canvas will return null, so fall-back to raster
@@ -88,7 +88,7 @@
 #if SK_SUPPORT_GPU
     if (GrTexture* texture = as_IB(image)->peekTexture()) {
         GrWrapTextureInBitmap(texture, image->width(), image->height(), image->isOpaque(), &tempBM);
-    } else 
+    } else
 #endif
     {
         image->asLegacyBitmap(&tempBM, SkImage::kRO_LegacyBitmapMode);