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/effects/GrMatrixConvolutionEffect.cpp b/src/gpu/effects/GrMatrixConvolutionEffect.cpp
index 1dd96a4..21af535 100644
--- a/src/gpu/effects/GrMatrixConvolutionEffect.cpp
+++ b/src/gpu/effects/GrMatrixConvolutionEffect.cpp
@@ -76,7 +76,7 @@
             GrGLSLShaderBuilder::ShaderBlock block(fragBuilder);
             int offset = y*kWidth + x;
 
-            fragBuilder->codeAppendf("float k = %s[%d]%s;", kernel, offset / 4, 
+            fragBuilder->codeAppendf("float k = %s[%d]%s;", kernel, offset / 4,
                                      kVecSuffix[offset & 0x3]);
             SkString coord;
             coord.printf("coord + vec2(%d, %d) * %s", x, y, imgInc);