Fix Chromium Libfuzzer Upload Windows ASan bot.

This bot has been failing due to a warning as error about the extra ';'
inside a class. This extra semicolon comes from some older existing
code, so this appears to be a new warning from -Wextra-semi.

Change-Id: Ibbd2ccda4dced9f0892ee19b1d5d9465131ec74e
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/494819
Auto-Submit: Ben Wagner <bungeman@google.com>
Reviewed-by: Herb Derby <herb@google.com>
Commit-Queue: Herb Derby <herb@google.com>

src/core/SkPathPriv.h

@@ -429,7 +429,7 @@ class SkPathEdgeIter {
     SkPoint         fScratch[2];    // for auto-close lines
     bool            fNeedsCloseLine;
     bool            fNextIsNewContour;
-    SkDEBUGCODE(bool fIsConic);
+    SkDEBUGCODE(bool fIsConic;)
 
     enum {
         kIllegalEdgeValue = 99