update memory input stream errors handler

src/gio/memory_input_stream/error.rs

@@ -1,5 +1,20 @@
+use std::fmt::{Display, Formatter, Result};
+
 #[derive(Debug)]
 pub enum Error {
-    BytesTotal,
-    InputStream,
+    BytesTotal(usize, usize),
+    InputStream(glib::Error),
+}
+
+impl Display for Error {
+    fn fmt(&self, f: &mut Formatter) -> Result {
+        match self {
+            Self::BytesTotal(total, limit) => {
+                write!(f, "Bytes total limit reached: {total} / {limit}")
+            }
+            Self::InputStream(reason) => {
+                write!(f, "Input stream error: {reason}")
+            }
+        }
+    }
 }