Code change to avoid signed/unsigned mismatch warnings

core/fpdfapi/fpdf_parser/cpdf_array.cpp

Index: core/fpdfapi/fpdf_parser/cpdf_array.cpp
diff --git a/core/fpdfapi/fpdf_parser/cpdf_array.cpp b/core/fpdfapi/fpdf_parser/cpdf_array.cpp
index 7ea27347453d1c7fe23d7fa2d46deee6a1b9d32b..964ba64236744543a8d59af02cc91526c61ebace 100644
--- a/core/fpdfapi/fpdf_parser/cpdf_array.cpp
+++ b/core/fpdfapi/fpdf_parser/cpdf_array.cpp
@@ -131,14 +131,14 @@ CPDF_Array* CPDF_Array::GetArrayAt(uint32_t i) const {
   return ToArray(GetDirectObjectAt(i));
 }
 
-void CPDF_Array::RemoveAt(uint32_t i, int nCount) {
+void CPDF_Array::RemoveAt(uint32_t i, uint32_t nCount) {
   if (i >= (uint32_t)m_Objects.GetSize())
     return;
 
   if (nCount <= 0 || nCount > m_Objects.GetSize() - i)
     return;
 
-  for (int j = 0; j < nCount; ++j) {
+  for (uint32_t j = 0; j < nCount; ++j) {
     if (CPDF_Object* p = m_Objects.GetAt(i + j))
       p->Release();
   }