Merge pull request #1435 from atom/aw/stop-selection-sync

Reset mouseSelectionInProgress synchronously on mouseUp

Author: smashwilson

lib/views/staging-view.js

@@ -778,15 +778,17 @@ export default class StagingView extends React.Component {
   }
 
   async mouseup() {
+    const hadSelectionInProgress = this.mouseSelectionInProgress;
+    this.mouseSelectionInProgress = false;
+
     await new Promise(resolve => {
       this.setState(prevState => ({
         selection: prevState.selection.coalesce(),
       }), resolve);
     });
-    if (this.mouseSelectionInProgress) {
+    if (hadSelectionInProgress) {
       this.debouncedDidChangeSelectedItem(true);
     }
-    this.mouseSelectionInProgress = false;
   }
 
   undoLastDiscard() {