internal/lsp/cache: fix data races to view.options

Use the concurrency-safe view.Options method.

Fixes golang/go#54214

Change-Id: If75a544ae477ee7361540c3933a18e3366d8ffd7
Reviewed-on: https://go-review.googlesource.com/c/tools/+/420954
Run-TryBot: Robert Findley <rfindley@google.com>
gopls-CI: kokoro <noreply+kokoro@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Dylan Le <dungtuanle@google.com>

internal/lsp/cache/load.go

@@ -141,7 +141,7 @@ func (s *snapshot) load(ctx context.Context, allowNetwork bool, scopes ...interf
 	}
 
 	moduleErrs := make(map[string][]packages.Error) // module path -> errors
-	filterer := buildFilterer(s.view.rootURI.Filename(), s.view.gomodcache, s.view.options)
+	filterer := buildFilterer(s.view.rootURI.Filename(), s.view.gomodcache, s.view.Options())
 	newMetadata := make(map[PackageID]*KnownMetadata)
 	for _, pkg := range pkgs {
 		// The Go command returns synthetic list results for module queries that

internal/lsp/cache/view.go

@@ -392,7 +392,7 @@ func (s *snapshot) locateTemplateFiles(ctx context.Context) {
 	relativeTo := s.view.folder.Filename()
 
 	searched := 0
-	filterer := buildFilterer(dir, s.view.gomodcache, s.view.options)
+	filterer := buildFilterer(dir, s.view.gomodcache, s.view.Options())
 	// Change to WalkDir when we move up to 1.16
 	err := filepath.Walk(dir, func(path string, fi os.FileInfo, err error) error {
 		if err != nil {