gn: fix fuzzer bug in parser for stack local

ParseNode::GetRange() returns a LocationRange by value, so the reference taken
is invalid at the next ;. Copy the Location by value instead.

R=brettw@chromium.org
BUG=683454

Review-Url: https://codereview.chromium.org/2654143005
Cr-Original-Commit-Position: refs/heads/master@{#446528}
Cr-Mirrored-From: https://chromium.googlesource.com/chromium/src
Cr-Mirrored-Commit: 0fcc08c5d93f2e8128d5e583c236dd2a81e70a7b
1 file changed
tree: 63d3c6cd302ab37dc4a8e3ccbd04c4bc77a58d79
  1. tools/