fix(selector): ignore selector's stderr

Gtk errors from wofi were polluting our selection

selector.go

@@ -47,7 +47,8 @@ func selector(data []string, max int, tool string) (string, error) {
 	processed, guide := preprocessData(data, true, false)
 
 	cmd := exec.Cmd{Path: bin, Args: args, Stdin: strings.NewReader(strings.Join(processed, "\n"))}
-	b, err := cmd.CombinedOutput()
+	b, err := cmd.Output()
+	// note: ignore stderr, necessary e.g. for wofi's gtk errors
 	if err != nil {
 		if err.Error() == "exit status 1" {
 			// dmenu/rofi exits with this error when no selection done