add asserts to point<-->verb helpers

src/core/SkRegion_path.cpp

Index: src/core/SkRegion_path.cpp
diff --git a/src/core/SkRegion_path.cpp b/src/core/SkRegion_path.cpp
index 80149a383651f094f7394fcb028e8ba62abce242..0a5a40180989075bb2321d7a1e72c6328dc7116f 100644
--- a/src/core/SkRegion_path.cpp
+++ b/src/core/SkRegion_path.cpp
@@ -216,25 +216,36 @@ void SkRgnBuilder::copyToRgn(SkRegion::RunType runs[]) const {
     *runs = SkRegion::kRunTypeSentinel;
 }
 
-static int count_path_runtype_values(const SkPath& path, int* itop, int* ibot) {
+static unsigned verb_to_initial_last_index(unsigned verb) {
     static const uint8_t gPathVerbToInitialLastIndex[] = {
         0,  //  kMove_Verb
         1,  //  kLine_Verb
         2,  //  kQuad_Verb
+        2,  //  kConic_Verb
         3,  //  kCubic_Verb
         0,  //  kClose_Verb
         0   //  kDone_Verb
     };
+    SkASSERT((unsigned)verb < SK_ARRAY_COUNT(gPathVerbToInitialLastIndex));
+    return gPathVerbToInitialLastIndex[verb];
+}
 
+static unsigned verb_to_max_edges(unsigned verb) {
     static const uint8_t gPathVerbToMaxEdges[] = {
         0,  //  kMove_Verb
         1,  //  kLine_Verb
         2,  //  kQuad_VerbB
+        2,  //  kConic_VerbB
         3,  //  kCubic_Verb
         0,  //  kClose_Verb
         0   //  kDone_Verb
     };
+    SkASSERT((unsigned)verb < SK_ARRAY_COUNT(gPathVerbToMaxEdges));
+    return gPathVerbToMaxEdges[verb];
+}
 
+
+static int count_path_runtype_values(const SkPath& path, int* itop, int* ibot) {
     SkPath::Iter    iter(path, true);
     SkPoint         pts[4];
     SkPath::Verb    verb;
@@ -244,9 +255,9 @@ static int count_path_runtype_values(const SkPath& path, int* itop, int* ibot) {
     SkScalar    bot = SkIntToScalar(SK_MinS16);
 
     while ((verb = iter.next(pts, false)) != SkPath::kDone_Verb) {
-        maxEdges += gPathVerbToMaxEdges[verb];
+        maxEdges += verb_to_max_edges(verb);
 
-        int lastIndex = gPathVerbToInitialLastIndex[verb];
+        int lastIndex = verb_to_initial_last_index(verb);
         if (lastIndex > 0) {
             for (int i = 1; i <= lastIndex; i++) {
                 if (top > pts[i].fY) {