Merge to XFA: Clean up CPDF_AnnotList.

fpdfsdk/src/fpdfeditpage.cpp

Index: fpdfsdk/src/fpdfeditpage.cpp
diff --git a/fpdfsdk/src/fpdfeditpage.cpp b/fpdfsdk/src/fpdfeditpage.cpp
index 8b4168fbf4d3a7aeabbbfba36134935d21e06e67..531d37247de16652d02e55950791575e4ea26540 100644
--- a/fpdfsdk/src/fpdfeditpage.cpp
+++ b/fpdfsdk/src/fpdfeditpage.cpp
@@ -280,7 +280,7 @@ DLLEXPORT void STDCALL FPDFPage_TransformAnnots(FPDF_PAGE page,
   if (!pPage)
     return;
   CPDF_AnnotList AnnotList(pPage);
-  for (int i = 0; i < AnnotList.Count(); i++) {
+  for (size_t i = 0; i < AnnotList.Count(); ++i) {
     CPDF_Annot* pAnnot = AnnotList.GetAt(i);
     // transformAnnots Rectangle
     CPDF_Rect rect;