Fixed code

web_tree_image/static/src/js/tooltip.js

@@ -3,15 +3,15 @@ odoo.define('web_tree_image.web_tree_image', function(require) {
 
 var ListRenderer = require('web.ListRenderer');
 
-ListRenderer.include({
-    events: _.extend({}, ListRenderer.prototype.events, {
-    	'mouseover tbody tr td .o_field_image': '_onHoverRecord_img',
-    }),
-	_onHoverRecord_img: function (event) {
-		var img_src = $(event.currentTarget).children('.img-responsive').attr('src')
-    	$(event.currentTarget).tooltip({
-    		title: "<img src="+img_src+" />"
-    	});
-	}
-});
+	ListRenderer.include({
+	    events: _.extend({}, ListRenderer.prototype.events, {
+	    	'mouseover tbody tr td .o_field_image': '_onHoverRecord_img',
+	    }),
+		_onHoverRecord_img: function (event) {
+			var img_src = $(event.currentTarget).children('.img-responsive').attr('src')
+	    	$(event.currentTarget).tooltip({
+	    		title: "<img src="+img_src+" />"
+	    	});
+		}
+	});
 })