Update a thinlto todo

The referenced change has since been landed, but we need another
one that's not in yet. Point at that instead.

Bug: none
Change-Id: Ibf6b3323fa13bf785e4fe52873576e1cc6fb93a2
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1603064
Commit-Queue: Peter Collingbourne <pcc@chromium.org>
Reviewed-by: Peter Collingbourne <pcc@chromium.org>
Auto-Submit: Nico Weber <thakis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#660473}

build/config/android/BUILD.gn

@@ -168,7 +168,7 @@ config("default_orderfile_instrumentation") {
     cflags = [ "-finstrument-function-entry-bare" ]
     if (use_thin_lto) {
       # TODO(pcc): This should not be necessary. Remove once
-      # https://reviews.llvm.org/D50017 lands and gets rolled in.
+      # https://reviews.llvm.org/D50016 lands and gets rolled in.
       ldflags = [ "-Wl,-u,__cyg_profile_func_enter_bare" ]
     }
   }