Merge to XFA: Use override in more classes in fpdfsdk/

fpdfsdk/src/fsdk_rendercontext.cpp

Index: fpdfsdk/src/fsdk_rendercontext.cpp
diff --git a/fpdfsdk/src/fsdk_rendercontext.cpp b/fpdfsdk/src/fsdk_rendercontext.cpp
index 1320824236e596bee862b6f7084218c3919cd7f1..e282d01db7bf516bdbfcd712b6fc8d2efac93738 100644
--- a/fpdfsdk/src/fsdk_rendercontext.cpp
+++ b/fpdfsdk/src/fsdk_rendercontext.cpp
@@ -36,6 +36,9 @@ IFSDK_PAUSE_Adapter::IFSDK_PAUSE_Adapter(IFSDK_PAUSE* IPause) {
   m_IPause = IPause;
 }
 
+IFSDK_PAUSE_Adapter::~IFSDK_PAUSE_Adapter() {
+}
+
 FX_BOOL IFSDK_PAUSE_Adapter::NeedToPauseNow() {
   if (m_IPause->NeedToPauseNow) {
     return m_IPause->NeedToPauseNow(m_IPause);