fix for latest breaking libstd changes to Options

src/main_ghostty.zig

@@ -109,20 +109,13 @@ pub fn main() !MainReturn {
     try app_runtime.run();
 }
 
-pub const std_options = struct {
+// The function std.log will call.
-    // Our log level is always at least info in every build mode.
+pub fn logFn(
-    pub const log_level: std.log.Level = switch (builtin.mode) {
-        .Debug => .debug,
-        else => .info,
-    };
-
-    // The function std.log will call.
-    pub fn logFn(
     comptime level: std.log.Level,
     comptime scope: @TypeOf(.EnumLiteral),
     comptime format: []const u8,
     args: anytype,
-    ) void {
+) void {
     // Stuff we can do before the lock
     const level_txt = comptime level.asText();
     const prefix = if (scope == .default) ": " else "(" ++ @tagName(scope) ++ "): ";
@@ -160,7 +153,15 @@ pub const std_options = struct {
             nosuspend stderr.print(level_txt ++ prefix ++ format ++ "\n", args) catch return;
         },
     }
-    }
+}
+
+pub const std_options: std.Options = .{
+    // Our log level is always at least info in every build mode.
+    .log_level = switch (builtin.mode) {
+        .Debug => .debug,
+        else => .info,
+    },
+    .logFn = logFn,
 };
 
 /// This represents the global process state. There should only