CPDF_Annot::GetRect() should return CFX_FloatRect.

Avoid using reference argument and return CFX_FloatRect instead.

Review-Url: https://codereview.chromium.org/2278153005
diff --git a/fpdfsdk/cba_annotiterator.cpp b/fpdfsdk/cba_annotiterator.cpp
index f07805e..bd68997 100644
--- a/fpdfsdk/cba_annotiterator.cpp
+++ b/fpdfsdk/cba_annotiterator.cpp
@@ -168,7 +168,5 @@
 }
 
 CFX_FloatRect CBA_AnnotIterator::GetAnnotRect(const CPDFSDK_Annot* pAnnot) {
-  CFX_FloatRect rcAnnot;
-  pAnnot->GetPDFAnnot()->GetRect(rcAnnot);
-  return rcAnnot;
+  return pAnnot->GetPDFAnnot()->GetRect();
 }