Update piex

Bug: oss-fuzz:6293
Change-Id: I05e344a879e9b0453e270dcd7c1974d311999e29
Reviewed-on: https://skia-review.googlesource.com/113709
Reviewed-by: Kevin Lubick <kjlubick@google.com>
Commit-Queue: Leon Scroggins <scroggo@google.com>
diff --git a/DEPS b/DEPS
index f113d90..037e111 100644
--- a/DEPS
+++ b/DEPS
@@ -17,7 +17,7 @@
   "third_party/externals/libwebp"       : "https://chromium.googlesource.com/webm/libwebp.git@v0.6.1",
   "third_party/externals/lua"           : "https://skia.googlesource.com/external/github.com/lua/lua.git@v5-3-4",
   "third_party/externals/microhttpd"    : "https://android.googlesource.com/platform/external/libmicrohttpd@748945ec6f1c67b7efc934ab0808e1d32f2fb98d",
-  "third_party/externals/piex"          : "https://android.googlesource.com/platform/external/piex.git@f7fc905cff18c7b883712bbfaffabd5d187bc787",
+  "third_party/externals/piex"          : "https://android.googlesource.com/platform/external/piex.git@bb217acdca1cc0c16b704669dd6f91a1b509c406",
   "third_party/externals/sdl"           : "https://skia.googlesource.com/third_party/sdl@5d7cfcca344034aff9327f77fc181ae3754e7a90",
   "third_party/externals/sfntly"        : "https://chromium.googlesource.com/external/github.com/googlei18n/sfntly.git@b18b09b6114b9b7fe6fc2f96d8b15e8a72f66916",
   "third_party/externals/skcms"         : "https://skia.googlesource.com/skcms@e5ac7a7c8d831355128eb1f708b34e5242096790",