Remove implicit conversions and some cleanup

core/src/fpdfdoc/doc_utils.cpp

Index: core/src/fpdfdoc/doc_utils.cpp
diff --git a/core/src/fpdfdoc/doc_utils.cpp b/core/src/fpdfdoc/doc_utils.cpp
index db5db4ee895f36f171f8ba475d513f6bdb19ff88..67a9324251d9430f0487476b0a7083fa16bd4a67 100644
--- a/core/src/fpdfdoc/doc_utils.cpp
+++ b/core/src/fpdfdoc/doc_utils.cpp
@@ -615,17 +615,19 @@ void RemoveInterFormFont(CPDF_Dictionary* pFormDict, CFX_ByteString csNameTag) {
   }
   pFonts->RemoveAt(csNameTag);
 }
+
 CPDF_Font* GetDefaultInterFormFont(CPDF_Dictionary* pFormDict,
                                    CPDF_Document* pDocument) {
   if (!pFormDict) {
     return NULL;
   }
-  CPDF_DefaultAppearance cDA = pFormDict->GetStringBy("DA");
+  CPDF_DefaultAppearance cDA(pFormDict->GetStringBy("DA"));
   CFX_ByteString csFontNameTag;
   FX_FLOAT fFontSize;
   cDA.GetFont(csFontNameTag, fFontSize);
   return GetInterFormFont(pFormDict, pDocument, csFontNameTag);
 }
+
 CPDF_IconFit::ScaleMethod CPDF_IconFit::GetScaleMethod() {
   if (!m_pDict) {
     return Always;