Properly close files to fix various issues on Windows (fixes GPG keygen, note temp files not being deleted)

src/cli/edit.go

@@ -102,6 +102,9 @@ func editNote(baseNote []string) ([]string, bool) {
 		}
 	}
 
+	// close tempFile
+	tempFile.Close()
+
 	// edit the tempFile (note) with the user's text editor
 	cmd := exec.Command(editor, tempFile.Name())
 	cmd.Stdout = os.Stdout
@@ -114,20 +117,22 @@ func editNote(baseNote []string) ([]string, bool) {
 	}
 
 	// open the tempFile for reading
-	file, err := os.Open(tempFile.Name())
+	tempFile, err = os.Open(tempFile.Name())
 	if err != nil {
 		fmt.Println(offline.AnsiError + "Failed to open temporary file (\"" + tempFile.Name() + "\") " + err.Error() + offline.AnsiReset)
 		os.Exit(1)
 	}
-	defer file.Close()
 
 	// read the edited note from the tempFile
 	var note []string
-	scanner := bufio.NewScanner(file)
+	scanner := bufio.NewScanner(tempFile)
 	for scanner.Scan() {
 		note = append(note, scanner.Text())
 	}
 
+	// close the tempFile
+	tempFile.Close()
+
 	// return the edited note if it is different from baseNote
 	if !reflect.DeepEqual(offline.RemoveTrailingEmptyStrings(note), baseNote) {
 		return note, true

src/offline/init.go

@@ -55,6 +55,9 @@ func GpgKeyGen() string {
 	unixTime := strconv.FormatInt(time.Now().Unix(), 10)
 	gpgGenTempFile.WriteString(strings.Join([]string{"Key-Type: eddsa", "Key-Curve: ed25519", "Key-Usage: sign", "Subkey-Type: ecdh", "Subkey-Curve: cv25519", "Subkey-Usage: encrypt", "Name-Real: libmutton-" + unixTime, "Name-Comment: gpg-libmutton", "Name-Email: github.com/rwinkhart/libmutton", "Expire-Date: 0"}, "\n"))
 
+	// close gpg-gen file
+	gpgGenTempFile.Close()
+
 	// generate GPG key based on gpg-gen file
 	cmd := exec.Command("gpg", "-q", "--batch", "--generate-key", gpgGenTempFile.Name())
 	cmd.Stdout = os.Stdout