add SK_WARN_UNUSED_RESULT warning to SkPathMeasure methods that might leave

POD var-arguments uninitialized.



git-svn-id: http://skia.googlecode.com/svn/trunk@3665 2bbb7eff-a529-9590-31e7-b0007b416f81

1 files changed, 9 insertions, 6 deletions

diff --git a/src/effects/SkDiscretePathEffect.cpp b/src/effects/SkDiscretePathEffect.cpp
index e8c0ec9ad2..06b9d19c68 100644
--- a/src/effects/SkDiscretePathEffect.cpp
+++ b/src/effects/SkDiscretePathEffect.cpp
@@ -50,14 +50,17 @@ bool SkDiscretePathEffect::filterPath(SkPath* dst, const SkPath& src,
                 n -= 1;
                 distance += delta/2;
             }
-            meas.getPosTan(distance, &p, &v);
-            Perterb(&p, v, SkScalarMul(rand.nextSScalar1(), scale));
-            dst->moveTo(p);
+            
+            if (meas.getPosTan(distance, &p, &v)) {
+                Perterb(&p, v, SkScalarMul(rand.nextSScalar1(), scale));
+                dst->moveTo(p);
+            }
             while (--n >= 0) {
                 distance += delta;
-                meas.getPosTan(distance, &p, &v);
-                Perterb(&p, v, SkScalarMul(rand.nextSScalar1(), scale));
-                dst->lineTo(p);
+                if (meas.getPosTan(distance, &p, &v)) {
+                    Perterb(&p, v, SkScalarMul(rand.nextSScalar1(), scale));
+                    dst->lineTo(p);
+                }
             }
             if (meas.isClosed()) {
                 dst->close();