Handle response without body

src/browser/page.zig

@@ -695,6 +695,18 @@ pub const Page = struct {
         self.clearTransferArena();
 
         switch (self.mode) {
+            .pre => {
+                // Received a response without a body like: https://httpbin.io/status/200
+                // We assume we have received an OK status (checked in Client.headerCallback)
+                // so we load a blank document to navigate away from any prior page.
+                self.mode = .{ .parsed = {} };
+
+                var fbs = std.io.fixedBufferStream("");
+                const html_doc = try parser.documentHTMLParse(fbs.reader(), "utf-8");
+                try self.setDocument(html_doc);
+
+                self.documentIsComplete();
+            },
             .raw => |buf| {
                 self.mode = .{ .raw_done = buf.items };
                 self.documentIsComplete();