clean up some resources better on error

src/Window.zig

@@ -255,6 +255,7 @@ pub fn create(alloc: Allocator, app: *App, config: *const Config) !*Window {
 
     // Create our terminal grid with the initial window size
     var renderer_impl = try Renderer.init(alloc, font_group);
+    errdefer renderer_impl.deinit();
     renderer_impl.background = .{
         .r = config.background.r,
         .g = config.background.g,

src/renderer/Thread.zig

@@ -65,7 +65,11 @@ pub fn init(
 
     // Create our event loop.
     var loop = try libuv.Loop.init(alloc);
-    errdefer loop.deinit(alloc);
+    errdefer {
+        // Run the loop once to close any of our handles
+        _ = loop.run(.nowait) catch 0;
+        loop.deinit(alloc);
+    }
     loop.setData(allocPtr);
 
     // This async handle is used to "wake up" the renderer and force a render.

src/termio/Thread.zig

@@ -49,7 +49,11 @@ pub fn init(
 
     // Create our event loop.
     var loop = try libuv.Loop.init(alloc);
-    errdefer loop.deinit(alloc);
+    errdefer {
+        // Run the loop once to close any of our handles
+        _ = loop.run(.nowait) catch 0;
+        loop.deinit(alloc);
+    }
     loop.setData(allocPtr);
 
     // This async handle is used to "wake up" the renderer and force a render.