[facet.num.put.virtuals] Fix definition and use of 'loc' (#1861)

Author: jensmaurer

source/locales.tex

@@ -2839,7 +2839,7 @@
 Writes characters to the sequence \tcode{out},
 formatting \tcode{val} as desired.
 In the following description,
-a local variable initialized with:
+\tcode{loc} names a local variable initialized as
 \begin{codeblock}
 locale loc = str.getloc();
 \end{codeblock}
@@ -2868,7 +2868,7 @@
 determined by stage 1 to a
 \tcode{charT}
 using a conversion and values returned by members of
-\tcode{use_facet<numpunct<charT>>(str.getloc())}
+\tcode{use_facet<numpunct<charT>>(loc)}
 \item
 Stage 3:
 Determine where padding is required.
@@ -2991,7 +2991,7 @@
 
 A local variable \tcode{punct} is initialized via
 \begin{codeblock}
-const numpunct<charT>& punct = use_facet<numpunct<charT>>(str.getloc());
+const numpunct<charT>& punct = use_facet<numpunct<charT>>(loc);
 \end{codeblock}
 
 For arithmetic types,