Enable conditional-uninitialized flag

Bug: skia:7462
Cq-Include-Trybots: skia.primary:Test-Debian9-Clang-GCE-CPU-AVX2-x86_64-Release-All-SKNX_NO_SIMD
Change-Id: I1c0a09984bf28a5c620a89af56040f018bae6310
Reviewed-on: https://skia-review.googlesource.com/90941
Commit-Queue: Kevin Lubick <kjlubick@google.com>
Reviewed-by: Mike Klein <mtklein@chromium.org>
diff --git a/tests/PathOpsAngleIdeas.cpp b/tests/PathOpsAngleIdeas.cpp
index c50260f..e6a75cd 100644
--- a/tests/PathOpsAngleIdeas.cpp
+++ b/tests/PathOpsAngleIdeas.cpp
@@ -611,7 +611,7 @@
     SkRandom ran;
     double smaller = SK_Scalar1;
     SkDQuad small[2];
-    SkDEBUGCODE(int smallIndex);
+    SkDEBUGCODE(int smallIndex = 0);
     for (int index = 0; index < 100000; ++index) {
         SkDPoint origin = {ran.nextRangeF(-1000, 1000), ran.nextRangeF(-1000, 1000)};
         QuadPts quad1 = {{origin, {ran.nextRangeF(-1000, 1000), ran.nextRangeF(-1000, 1000)},