Merge pull request mui#1946 from VincentBel/master

[Dialog] fix the problem that bottom body become scrollable after resizing

Author: shaurya947

src/dialog.jsx

@@ -121,7 +121,7 @@ let Dialog = React.createClass({
 
   windowListeners: {
     keyup: '_handleWindowKeyUp',
-    resize: '_positionDialog',
+    resize: '_handleResize',
   },
 
   getDefaultProps() {
@@ -469,6 +469,13 @@ let Dialog = React.createClass({
     }
   },
 
+  _handleResize() {
+    if (this.state.open) {
+      this.refs.dialogOverlay.preventScrolling();
+      this._positionDialog();
+    }
+  },
+
 });
 
 module.exports = Dialog;