Change a docstring into a comment.

dist/converse.js

@@ -59135,10 +59135,9 @@ _converse_headless_converse_core__WEBPACK_IMPORTED_MODULE_5__["default"].plugins
       },
 
       onDrop(evt) {
-        /* There are no files to be dropped, this isn’t a file transfer
-         * operation.
-         */
-        if (evt.dataTransfer.files.length == 0) return;
+        if (evt.dataTransfer.files.length == 0) // There are no files to be dropped, so this isn’t a file
+          // transfer operation.
+          return;
         evt.preventDefault();
         this.model.sendFiles(evt.dataTransfer.files);
       },

src/converse-chatview.js

@@ -405,10 +405,9 @@ converse.plugins.add('converse-chatview', {
             },
 
             onDrop (evt) {
-                /* There are no files to be dropped, this isn’t a file transfer
-                 * operation.
-                 */
                 if (evt.dataTransfer.files.length == 0)
+                    // There are no files to be dropped, so this isn’t a file
+                    // transfer operation.
                     return;
                 evt.preventDefault();
                 this.model.sendFiles(evt.dataTransfer.files);