Changed code to call delegate method to possibly reposition the popover

to use pointer correctly - got rid of need for pragmas to turn off compiler
warnings that were actually valid.

WYPopoverController/WYPopoverController.m

@@ -2855,21 +2855,18 @@ - (void)didChangeDeviceOrientation:(NSNotification *)notification {
     _inView = [_barButtonItem valueForKey:@"view"];
     _rect = _inView.bounds;
   } else if ([_delegate respondsToSelector:@selector(popoverController:willRepositionPopoverToRect:inView:)]) {
-    CGRect anotherRect;
-    UIView *anotherInView;
+    CGRect anotherRect = CGRectZero;
+    UIView *anotherInView = nil;
 
     [_delegate popoverController:self willRepositionPopoverToRect:&anotherRect inView:&anotherInView];
 
-#pragma clang diagnostic push
-#pragma GCC diagnostic ignored "-Wtautological-pointer-compare"
-    if (&anotherRect != NULL) {
+    if (!CGRectEqualToRect(anotherRect, CGRectZero)) {
       _rect = anotherRect;
     }
 
-    if (&anotherInView != NULL) {
+    if (anotherInView != nil) {
       _inView = anotherInView;
     }
-#pragma GCC diagnostic pop
   }
 
   [self positionPopover:NO];