When you perform a new search, begin the query one character in front of the...

When you perform a new search, begin the query one character in front of the find cursor. That way if the new query should match at the same starting point as the currently highlighted result, it will simply extend it. I think I broke this because it only worked by accident before and I made SearchResults make sense recently. Issue 5949

sources/FindViewController.m

@@ -721,7 +721,7 @@ const CGFloat kEdgeWidth = 3;
     [self findSubString:theString
        forwardDirection:NO
                    mode:state_.mode
-             withOffset:0];
+             withOffset:-1];
 }
 - (void)deselectFindBarTextField {