SkColorSpace tweaks

tests/ColorSpaceTest.cpp

Index: tests/ColorSpaceTest.cpp
diff --git a/tests/ColorSpaceTest.cpp b/tests/ColorSpaceTest.cpp
index 097ca0929a2b898e1e57358f92986bc4fe90cac1..da69ea7e0f6e76546f487fb44dfff139d4a7acea 100644
--- a/tests/ColorSpaceTest.cpp
+++ b/tests/ColorSpaceTest.cpp
@@ -21,7 +21,7 @@ static void test_space(skiatest::Reporter* r, SkColorSpace* space,
                        const float red[], const float green[], const float blue[],
                        const float expectedGammas[]) {
 
-    SkGammas* gammas = as_CSB(space)->gammas();
+    const sk_sp<SkGammas>& gammas = as_CSB(space)->gammas();
     REPORTER_ASSERT(r, almost_equal(expectedGammas[0], gammas->fRed.fValue));
     REPORTER_ASSERT(r, almost_equal(expectedGammas[1], gammas->fGreen.fValue));
     REPORTER_ASSERT(r, almost_equal(expectedGammas[2], gammas->fBlue.fValue));