ObjFW  Diff

		if (attribute->_namespace != nil &&
		    (attributePrefix = [allNamespaces objectForKey:
		    attribute->_namespace]) == nil)
			@throw [OFUnboundNamespaceException
			    exceptionWithNamespace: [attribute namespace]
					   element: self];

		length += attributeNameLength +
		    (attributePrefix != nil ?
		    attributePrefix.UTF8StringLength + 1 : 0) +
		    tmp.UTF8StringLength + 4;

		@try {
			cString = [self resizeMemory: cString
						size: length];
		} @catch (id e) {
			[self freeMemory: cString];