Update dependencies (#1951)

vendor/go.uber.org/multierr/CHANGELOG.md

@@ -1,6 +1,12 @@
 Releases
 ========
 
+v1.8.0 (2022-02-28)
+===================
+
+-   `Combine`: perform zero allocations when there are no errors.
+
+
 v1.7.0 (2021-05-06)
 ===================
 

vendor/go.uber.org/multierr/error.go

@@ -103,7 +103,7 @@
 // 		if err != nil {
 // 			return err
 // 		}
-// 		defer multierr.AppendInvoke(err, multierr.Close(conn))
+// 		defer multierr.AppendInvoke(&err, multierr.Close(conn))
 // 		// ...
 // 	}
 //
@@ -372,6 +372,14 @@ func inspect(errors []error) (res inspectResult) {
 
 // fromSlice converts the given list of errors into a single error.
 func fromSlice(errors []error) error {
+	// Don't pay to inspect small slices.
+	switch len(errors) {
+	case 0:
+		return nil
+	case 1:
+		return errors[0]
+	}
+
 	res := inspect(errors)
 	switch res.Count {
 	case 0:
@@ -381,8 +389,13 @@ func fromSlice(errors []error) error {
 		return errors[res.FirstErrorIdx]
 	case len(errors):
 		if !res.ContainsMultiError {
-			// already flat
-			return &multiError{errors: errors}
+			// Error list is flat. Make a copy of it
+			// Otherwise "errors" escapes to the heap
+			// unconditionally for all other cases.
+			// This lets us optimize for the "no errors" case.
+			out := make([]error, len(errors))
+			copy(out, errors)
+			return &multiError{errors: out}
 		}
 	}