#939, #937: Fix crash on ArchLinux and Ubuntu 22.10 Kinetic

This seems to be an issue with glib2 2.74 and strings that contain a improper unicode escape code (\uXX instead of /uXXXX). Since this function is used by all the progress windows, creating or deleting snapshots from the GUI was causing a crash.

src/Utility/TeeJee.Misc.vala

@@ -149,27 +149,9 @@ namespace TeeJee.Misc {
 		return new_txt;
 	}
 
-	public string escape_html(string html, bool pango_markup = true){
-		string txt = html;
-
-		if (pango_markup){
-			txt = txt
-				.replace("\\u00", "")
-				.replace("\\x"  , ""); 
-		}
-		else{
-			txt = txt
-				.replace(" ", " ");  //pango markup throws an error with  
-		}
+	public string escape_html(string html){
 
-		txt = txt
-				.replace("&" , "&")
-				.replace("\"", """)
-				.replace("<" , "&lt;")
-				.replace(">" , "&gt;")
-				;
-
-		return txt;
+		return GLib.Markup.escape_text(html);
 	}
 
 	public string unescape_html(string html){