bugFix:Docset download interface crash

Dash/DHDBSearchController.m

@@ -133,7 +133,7 @@ - (void)searchDisplayControllerDidEndSearch:(UISearchDisplayController *)control
 }
 
 - (BOOL)searchDisplayController:(UISearchDisplayController *)controller shouldReloadTableForSearchString:(NSString *)searchString
-{
+{    
     if(self.isRestoring)
     {
         self.displayController.searchResultsTableView.allowsSelection = YES;
@@ -168,11 +168,11 @@ - (BOOL)searchDisplayController:(UISearchDisplayController *)controller shouldRe
 
 - (void)searchDisplayController:(UISearchDisplayController *)controller willShowSearchResultsTableView:(UITableView *)tableView
 {
-
 }
 
 - (void)searchDisplayController:(UISearchDisplayController *)controller willHideSearchResultsTableView:(UITableView *)tableView
 {
+
     [self.searcher cancelSearch];
     self.searcher = nil;
 }

Dash/DHDocsetDownloader.m

@@ -764,4 +764,10 @@ - (id)initWithCoder:(NSCoder *)aDecoder
     return self;
 }
 
+- (void)viewWillDisappear:(BOOL)animated
+{
+    [super viewWillDisappear:animated];
+    [self.searchController setActive:NO animated:YES];
+}
+
 @end

Dash/UIView+DHUtils.m

@@ -37,4 +37,4 @@ CGPoint CGIncreasePoint(CGPoint point, CGFloat x, CGFloat y) {
 
 CGSize CGIncreaseSize(CGSize size, CGFloat width, CGFloat height) {
     return CGSizeMake(size.width+width, size.height+height);
-}
+}