vendor: update go-fuzz

Update to HEAD to fix:

$ go-fuzz-build ./pkg/tool
failed to execute go build: exit status 2
/go1.15/src/reflect/value.go:1432: misplaced compiler directive

2 files changed, 6 insertions, 4 deletions

diff --git a/vendor/github.com/dvyukov/go-fuzz/go-fuzz-build/cover.go b/vendor/github.com/dvyukov/go-fuzz/go-fuzz-build/cover.go
index 5c5d83efb..070863d89 100644
--- a/vendor/github.com/dvyukov/go-fuzz/go-fuzz-build/cover.go
+++ b/vendor/github.com/dvyukov/go-fuzz/go-fuzz-build/cover.go
@@ -329,7 +329,7 @@ func (s *Sonar) Visit(n ast.Node) ast.Visitor {
 				Args: []ast.Expr{v1, v2, &ast.BasicLit{Kind: token.INT, Value: strconv.Itoa(id)}},
 			},
 		},
-		&ast.ReturnStmt{Results: []ast.Expr{&ast.BinaryExpr{Op: nn.Op, X: v1, Y: v2}}},
+		&ast.ReturnStmt{Results: []ast.Expr{&ast.BinaryExpr{Op: nn.Op, X: v1, Y: v2, OpPos: nn.Pos()}}},
 	)
 	nn.X = &ast.CallExpr{
 		Fun: &ast.FuncLit{
@@ -653,10 +653,12 @@ func (f *File) addImport(path, name, anyIdent string) {
 		},
 	}
 	impDecl := &ast.GenDecl{
-		Tok: token.IMPORT,
+		Lparen: f.astFile.Name.End(),
+		Tok:    token.IMPORT,
 		Specs: []ast.Spec{
 			newImport,
 		},
+		Rparen: f.astFile.Name.End(),
 	}
 	// Make the new import the first Decl in the file.
 	astFile := f.astFile
diff --git a/vendor/github.com/dvyukov/go-fuzz/go-fuzz-build/main.go b/vendor/github.com/dvyukov/go-fuzz/go-fuzz-build/main.go
index dc43ac2b4..e2d476929 100644
--- a/vendor/github.com/dvyukov/go-fuzz/go-fuzz-build/main.go
+++ b/vendor/github.com/dvyukov/go-fuzz/go-fuzz-build/main.go
@@ -62,8 +62,8 @@ func basePackagesConfig() *packages.Config {
 	cfg := new(packages.Config)
 
 	// Note that we do not set GO111MODULE here in order to respect any GO111MODULE
-	// setting by the user as we are finding dependencies. Note, however, that 
-	// we are still setting up a GOPATH to build, so we later will force 
+	// setting by the user as we are finding dependencies. Note, however, that
+	// we are still setting up a GOPATH to build, so we later will force
 	// GO111MODULE to be off when building so that we are in GOPATH mode.
 	// If the user has not set GO111MODULE, the meaning here is
 	// left up to cmd/go (defaulting to 'auto' in Go 1.11-1.13,