winscard: Add stubs for SCardIsValidContext/SCardReleaseContext.

dlls/winscard/winscard.c

@@ -95,9 +95,23 @@ LONG WINAPI SCardEstablishContext(DWORD dwScope, LPCVOID pvReserved1,
     return SCARD_F_INTERNAL_ERROR;
 }
 
+LONG WINAPI SCardIsValidContext(SCARDCONTEXT context)
+{
+    FIXME("(%lx) stub\n", context);
+    SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
+    return SCARD_F_INTERNAL_ERROR;
+}
+
 LONG WINAPI SCardListCardsA(SCARDCONTEXT hContext, LPCBYTE pbAtr, LPCGUID rgguidInterfaces, DWORD cguidInterfaceCount, LPSTR mszCards, LPDWORD pcchCards)
 {
     FIXME(": stub\n");
     SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
     return SCARD_F_INTERNAL_ERROR;
 }
+
+LONG WINAPI SCardReleaseContext(SCARDCONTEXT context)
+{
+    FIXME("(%lx) stub\n", context);
+    SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
+    return SCARD_F_INTERNAL_ERROR;
+}

dlls/winscard/winscard.spec

@@ -33,7 +33,7 @@
 @ stub SCardIntroduceReaderGroupA
 @ stub SCardIntroduceReaderGroupW
 @ stub SCardIntroduceReaderW
-@ stub SCardIsValidContext
+@ stdcall SCardIsValidContext(long)
 @ stdcall SCardListCardsA(long ptr ptr long str long)
 @ stub SCardListCardsW
 @ stub SCardListInterfacesA
@@ -47,7 +47,7 @@
 @ stub SCardLocateCardsByATRW
 @ stub SCardLocateCardsW
 @ stub SCardReconnect
-@ stub SCardReleaseContext
+@ stdcall SCardReleaseContext(long)
 @ stub SCardReleaseStartedEvent
 @ stub SCardRemoveReaderFromGroupA
 @ stub SCardRemoveReaderFromGroupW