Avoid counting verbs twice in SkPath::isEmpty()

src/core/SkPath.cpp

Index: src/core/SkPath.cpp
diff --git a/src/core/SkPath.cpp b/src/core/SkPath.cpp
index d1e4d79179003a66c02cbbac0c5d49363f2d4194..875be9801e4d2910c2a757652abbb1c4a32395d3 100644
--- a/src/core/SkPath.cpp
+++ b/src/core/SkPath.cpp
@@ -380,11 +380,11 @@ bool SkPath::isEmpty() const {
 
 bool SkPath::isLine(SkPoint line[2]) const {
     int verbCount = fPathRef->countVerbs();
-    int ptCount = fPathRef->countVerbs();
 
-    if (2 == verbCount && 2 == ptCount) {
-        if (kMove_Verb == fPathRef->atVerb(0) &&
-            kLine_Verb == fPathRef->atVerb(1)) {
+    if (2 == verbCount) {
+        SkASSERT(kMove_Verb == fPathRef->atVerb(0));
+        if (kLine_Verb == fPathRef->atVerb(1)) {
+            SkASSERT(2 == fPathRef->countPoints());
             if (line) {
                 const SkPoint* pts = fPathRef->points();
                 line[0] = pts[0];