Fix build

Change-Id: I7ee28c474aa821eb598f719723d87416a41537b9
diff --git a/libs/hwui/PathTessellator.cpp b/libs/hwui/PathTessellator.cpp
index e7c6c05..310da41 100644
--- a/libs/hwui/PathTessellator.cpp
+++ b/libs/hwui/PathTessellator.cpp
@@ -942,7 +942,8 @@
     }
 private:
     bool initialized = false;
-    double lastX, lastY;
+    double lastX = 0;
+    double lastY = 0;
     double sum = 0;
 };