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/GrSWMaskHelper.cpp b/src/gpu/GrSWMaskHelper.cpp
index b6117e3..396d2be 100644
--- a/src/gpu/GrSWMaskHelper.cpp
+++ b/src/gpu/GrSWMaskHelper.cpp
@@ -199,7 +199,7 @@
             fCompressedBuffer.reset(cmpSz);
             fCompressionMode = kBlitter_CompressionMode;
         }
-    } 
+    }
 
     sk_bzero(&fDraw, sizeof(fDraw));