Fix uninit warning on valgrind bot in SkPathPriv:IsSimpleClosedRect

src/core/SkPath.cpp

 /*
  * Copyright 2006 The Android Open Source Project
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include <cmath>
 #include "SkBuffer.h"
 #include "SkCubicClipper.h"
@@ skipping 3277 matching lines @@
     }
     if (rectPtCnt < 5) {
         return false;
     }
     if (rectPts[0] != rectPts[4]) {
         return false;
     }
     int verticalCnt = 0;
     int horizontalCnt = 0;
     // dirs are 0 - right, 1 - down, 2 - left, 3 - up.
-    int firstDir;
-    int secondDir;
+    int firstDir = 0;
+    int secondDir = 0;
     SkRect tempRect;
     for (int i = 0; i < 4; ++i) {
         int sameCnt = 0;
         if (rectPts[i].fX == rectPts[i + 1].fX) {
             verticalCnt += 1;
             sameCnt = 1;
             if (0 == i) {
                 if (rectPts[1].fY > rectPts[0].fY) {
                     firstDir = 1;
                     tempRect.fTop = rectPts[0].fY;
@@ skipping 48 matching lines @@
         return false;
     }
     // low bit indicates a vertical dir
     SkASSERT((firstDir ^ secondDir) & 0b1);
     if (((firstDir + 1) & 0b11) == secondDir) {
         *direction = SkPath::kCW_Direction;
         *start = firstDir;
     } else {
         SkASSERT(((secondDir + 1) & 0b11) == firstDir);
         *direction = SkPath::kCCW_Direction;
-        *start =  secondDir;
+        *start = secondDir;
     }
     *rect = tempRect;
     return true;
 }