[expr.const][cstdarg.syn] Index use of va_start macro

Author: AlisdairM

source/expressions.tex

@@ -7944,7 +7944,7 @@
 an operation that has undefined behavior
 as specified in \ref{library} through \ref{\lastlibchapter} or
 \item
-an invocation of the \tcode{va_start} macro\iref{cstdarg.syn}.
+an invocation of the \libmacro{va_start} macro\iref{cstdarg.syn}.
 \end{itemize}
 
 \pnum

source/support.tex

@@ -6014,8 +6014,7 @@
 the definition in~\ref{expr.call} applies.
 \item
 The restrictions that C places on the second parameter to the
-\indexlibraryglobal{va_start}%
-\tcode{va_start} macro in header \libheader{stdarg.h}
+\libmacro{va_start} macro in header \libheader{stdarg.h}
 are different in this document.
 The parameter
 \tcode{parmN}