browser: assume no-content type is html

Author: krichprollsch

src/browser/browser.zig

@@ -399,7 +399,9 @@ pub const Page = struct {
             // no content type in HTTP headers.
             // TODO try to sniff mime type from the body.
             log.info("no content-type HTTP header", .{});
-            return;
+
+            // Assume it's HTML for now.
+            "text/html; charset=utf-8";
         };
 
         log.debug("header content-type: {s}", .{ct});