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/rectangletexture.cpp b/gm/rectangletexture.cpp
index 43d008a..47390e2 100644
--- a/gm/rectangletexture.cpp
+++ b/gm/rectangletexture.cpp
@@ -1,4 +1,3 @@
-
 /*
  * Copyright 2016 Google Inc.
  *
@@ -95,7 +94,7 @@
         GR_GL_CALL(gl, TexParameteri(TARGET, GR_GL_TEXTURE_MIN_FILTER,
                                      GR_GL_NEAREST));
         GR_GL_CALL(gl, TexParameteri(TARGET, GR_GL_TEXTURE_WRAP_S,
-                                     GR_GL_CLAMP_TO_EDGE));    
+                                     GR_GL_CLAMP_TO_EDGE));
         GR_GL_CALL(gl, TexParameteri(TARGET, GR_GL_TEXTURE_WRAP_T,
                                      GR_GL_CLAMP_TO_EDGE));
         GR_GL_CALL(gl, TexImage2D(TARGET, 0, GR_GL_RGBA, width, height, 0,