widl: res50 is number of impinfos. Fix its usage.
diff --git a/tools/widl/typelib_struct.h b/tools/widl/typelib_struct.h
index 83a326b..961105c 100644
--- a/tools/widl/typelib_struct.h
+++ b/tools/widl/typelib_struct.h
@@ -76,7 +76,7 @@
INT res44; /* unknown always: 0x20 (guid hash size?) */
INT res48; /* unknown always: 0x80 (name hash size?) */
INT dispatchpos; /* HREFTYPE to IDispatch, or -1 if no IDispatch */
-/*0x50*/INT res50; /* is zero becomes one when an interface is derived */
+/*0x50*/INT nimpinfos; /* number of impinfos */
} MSFT_Header;
/* segments in the type lib file have a structure like this: */