Pass required props to TintableSvg.

src/components/views/elements/AppTile.js

@@ -390,6 +390,8 @@ export default React.createClass({
                             className="mx_AppTileMenuBarWidget mx_AppTileMenuBarWidgetPadding"
                             title={_t('Edit')}
                             onClick={this._onEditClick}
+                            width="10"
+                            height="10"
                         /> }
 
                         { /* Delete widget */ }
@@ -398,6 +400,8 @@ export default React.createClass({
                             className={deleteClasses}
                             title={_t(deleteWidgetLabel)}
                             onClick={this._onDeleteClick}
+                            width="10"
+                            height="10"
                         />
                     </span>
                 </div>

src/components/views/elements/TintableSvgButton.js

@@ -36,6 +36,8 @@ export default class TintableSvgButton extends React.Component {
                 className={classes}>
                 <TintableSvg
                     src={this.props.src}
+                    width={this.props.width}
+                    height={this.props.height}
                 ></TintableSvg>
                 <span
                     title={this.props.title}
@@ -49,8 +51,8 @@ TintableSvgButton.propTypes = {
     src: PropTypes.string,
     title: PropTypes.string,
     className: PropTypes.string,
-    width: PropTypes.string,
+    width: PropTypes.string.isRequired,
-    height: PropTypes.string,
+    height: PropTypes.string.isRequired,
     onClick: PropTypes.func,
 };