[bugfix] Fix remote media pruning failing if media already gone (#548)

* fix error check of prune to allow missing files

* update go-store library, add test for pruning item with db entry but no file

Signed-off-by: kim <grufwub@gmail.com>

* remove now-unneccessary error check

Signed-off-by: kim <grufwub@gmail.com>

Co-authored-by: kim <grufwub@gmail.com>

vendor/codeberg.org/gruf/go-errors/v2/standard.go

@@ -0,0 +1,99 @@
+package errors
+
+import (
+	"errors"
+	"reflect"
+
+	"codeberg.org/gruf/go-bitutil"
+)
+
+// Is reports whether any error in err's chain matches any of targets
+// (up to a max of 64 targets).
+//
+// The chain consists of err itself followed by the sequence of errors obtained by
+// repeatedly calling Unwrap.
+//
+// An error is considered to match a target if it is equal to that target or if
+// it implements a method Is(error) bool such that Is(target) returns true.
+func Is(err error, targets ...error) bool {
+	var flags bitutil.Flags64
+
+	if len(targets) > 64 {
+		panic("too many targets")
+	}
+
+	// Determine if each of targets are comparable
+	for i := 0; i < len(targets); {
+		// Drop nil errors
+		if targets[i] == nil {
+			targets = append(targets[:i], targets[i+1:]...)
+			continue
+		}
+
+		// Check if this error is directly comparable
+		if reflect.TypeOf(targets[i]).Comparable() {
+			flags = flags.Set(uint8(i))
+		}
+
+		i++
+	}
+
+	for err != nil {
+		var errorIs func(error) bool
+
+		// Check if this layer supports .Is interface
+		is, ok := err.(interface{ Is(error) bool })
+		if ok {
+			errorIs = is.Is
+		} else {
+			errorIs = neveris
+		}
+
+		for i := 0; i < len(targets); i++ {
+			// Try directly compare errors
+			if flags.Get(uint8(i)) &&
+				err == targets[i] {
+				return true
+			}
+
+			// Try use .Is() interface
+			if errorIs(targets[i]) {
+				return true
+			}
+		}
+
+		// Unwrap to next layer
+		err = errors.Unwrap(err)
+	}
+
+	return false
+}
+
+// As finds the first error in err's chain that matches target, and if one is found, sets
+// target to that error value and returns true. Otherwise, it returns false.
+//
+// The chain consists of err itself followed by the sequence of errors obtained by
+// repeatedly calling Unwrap.
+//
+// An error matches target if the error's concrete value is assignable to the value
+// pointed to by target, or if the error has a method As(interface{}) bool such that
+// As(target) returns true. In the latter case, the As method is responsible for
+// setting target.
+//
+// An error type might provide an As method so it can be treated as if it were a
+// different error type.
+//
+// As panics if target is not a non-nil pointer to either a type that implements
+// error, or to any interface type.
+func As(err error, target interface{}) bool {
+	return errors.As(err, target)
+}
+
+// Unwrap returns the result of calling the Unwrap method on err, if err's
+// type contains an Unwrap method returning error. Otherwise, Unwrap returns nil.
+func Unwrap(err error) error {
+	return errors.Unwrap(err)
+}
+
+// neveris fits the .Is(error) bool interface function always returning false.
+func neveris(error) bool { return false }