LibWeb: Dont abort when parsing data- properties that contain dashes

Author: https://github.com/stelar7
Commit: https://github.com/SerenityOS/serenity/commit/196dada7e2
Pull-request: https://github.com/SerenityOS/serenity/pull/13723
Reviewed-by: https://github.com/IdanHo ✅

Userland/Libraries/LibWeb/HTML/DOMStringMap.cpp

@@ -52,7 +52,7 @@ Vector<DOMStringMap::NameValuePair> DOMStringMap::get_name_value_pairs() const
                     // Skip the next character
                     ++character_index;
 
-                    return;
+                    continue;
                 }
             }