feat: Tolerate collector failures (#1769)

Signed-off-by: Jan-Otto Kröpke <mail@jkroepke.de>

internal/mi/callbacks.go

@@ -27,7 +27,10 @@ import (
 	"golang.org/x/sys/windows"
 )
 
-// We have to registry a global callback function, since the amount of callbacks is limited.
+// operationUnmarshalCallbacksInstanceResult registers a global callback function.
+// The amount of system callbacks is limited to 2000.
+//
+//nolint:gochecknoglobals
 var operationUnmarshalCallbacksInstanceResult = sync.OnceValue[uintptr](func() uintptr {
 	// Workaround for a deadlock issue in go.
 	// Ref: https://github.com/golang/go/issues/55015
@@ -135,7 +138,7 @@ func (o *OperationUnmarshalCallbacks) InstanceResult(
 
 		element, err := instance.GetElement(miTag)
 		if err != nil {
-			o.errCh <- fmt.Errorf("failed to get element: %w", err)
+			o.errCh <- fmt.Errorf("failed to get element %s: %w", miTag, err)
 
 			return 0
 		}
@@ -149,9 +152,8 @@ func (o *OperationUnmarshalCallbacks) InstanceResult(
 			field.SetInt(int64(element.value))
 		case ValueTypeSTRING:
 			if element.value == 0 {
-				o.errCh <- fmt.Errorf("%s: invalid pointer: value is nil", miTag)
-
-				return 0
+				// value is null
+				continue
 			}
 
 			// Convert the UTF-16 string to a Go string