sechost: Use fully interpreted IDL stubs.

dlls/sechost/Makefile.in

@@ -3,6 +3,8 @@ IMPORTLIB = sechost
 IMPORTS   = kernelbase
 DELAYIMPORTS = rpcrt4
 
+EXTRAIDLFLAGS = -Oicf
+
 SOURCES = \
 	plugplay.idl \
 	security.c \

dlls/sechost/service.c

@@ -284,9 +284,8 @@ SC_HANDLE WINAPI DECLSPEC_HOTPATCH OpenSCManagerW( const WCHAR *machine, const W
     }
     __ENDTRY
 
-    if (!err) return handle;
     SetLastError( err );
-    return NULL;
+    return handle;
 }
 
 /******************************************************************************