Fix a bug where unique element IDs aren't unique (#215)

Author: tone81

src/linkify-react.js

@@ -71,6 +71,8 @@ function linkifyReactElement(element, opts, elementId = 0) {
 
 	React.Children.forEach(element.props.children, (child) => {
 		if (typeof child === 'string') {
+			// ensure that we always generate unique element IDs for keys
+			elementId = elementId + 1;
 			children.push(...stringToElements(child, opts));
 		} else if (React.isValidElement(child)) {
 			if (typeof child.type === 'string'