Fix iOS build

TBR=rmistry@google.com

BUG=skia:

Change-Id: I5fc38227138d5433b2435d9dab13ec5ade9a26b8
Reviewed-on: https://skia-review.googlesource.com/6235
Reviewed-by: Matt Sarett <msarett@google.com>
Reviewed-by: Ravi Mistry <rmistry@google.com>
Commit-Queue: Matt Sarett <msarett@google.com>
diff --git a/tests/ICCTest.cpp b/tests/ICCTest.cpp
index f4639f0..38d6801 100644
--- a/tests/ICCTest.cpp
+++ b/tests/ICCTest.cpp
@@ -18,7 +18,7 @@
 
 static inline void test_to_xyz_d50(skiatest::Reporter* r, SkICC* icc, bool shouldSucceed,
                                    const float* reference) {
-    SkMatrix44 result;
+    SkMatrix44 result(SkMatrix44::kUninitialized_Constructor);
     REPORTER_ASSERT(r, shouldSucceed == icc->toXYZD50(&result));
     if (shouldSucceed) {
         float resultVals[16];