Remove unnecessary result in line shaping (#30721)

Updates #29879

Release Notes:

- N/A

crates/gpui/examples/input.rs

@@ -481,8 +481,7 @@ impl Element for TextElement {
         let font_size = style.font_size.to_pixels(window.rem_size());
         let line = window
             .text_system()
-            .shape_line(display_text, font_size, &runs)
-            .unwrap();
+            .shape_line(display_text, font_size, &runs);
 
         let cursor_pos = line.x_for_index(cursor);
         let (selection, cursor) = if selected_range.is_empty() {

crates/gpui/src/text_system.rs

@@ -343,7 +343,7 @@ impl WindowTextSystem {
         text: SharedString,
         font_size: Pixels,
         runs: &[TextRun],
-    ) -> Result<ShapedLine> {
+    ) -> ShapedLine {
         debug_assert!(
             text.find('\n').is_none(),
             "text argument should not contain newlines"
@@ -370,13 +370,13 @@ impl WindowTextSystem {
             });
         }
 
-        let layout = self.layout_line(&text, font_size, runs)?;
+        let layout = self.layout_line(&text, font_size, runs);
 
-        Ok(ShapedLine {
+        ShapedLine {
             layout,
             text,
             decoration_runs,
-        })
+        }
     }
 
     /// Shape a multi line string of text, at the given font_size, for painting to the screen.
@@ -510,7 +510,7 @@ impl WindowTextSystem {
         text: Text,
         font_size: Pixels,
         runs: &[TextRun],
-    ) -> Result<Arc<LineLayout>>
+    ) -> Arc<LineLayout>
     where
         Text: AsRef<str>,
         SharedString: From<Text>,
@@ -537,7 +537,7 @@ impl WindowTextSystem {
         font_runs.clear();
         self.font_runs_pool.lock().push(font_runs);
 
-        Ok(layout)
+        layout
     }
 }