doc/runtime.tex: Fix name of `SOD_XCHAIN' macro.

The index entry was right, but the synopsis showed the wrong name.

diff --git a/doc/runtime.tex b/doc/runtime.tex
index a4a15ed0ffc31c5f1501bee345c59f26aedd5b74..2e04639664f6ec6be58ef9dc71f25368ac62f305 100644 (file)
--- a/doc/runtime.tex
+++ b/doc/runtime.tex
@@ -688,7 +688,7 @@ some (static) type into instance pointers of other static types to the same
 instance.
 
 \begin{describe}[SOD_XCHAIN]{mac}
-    {void *SOD_CHAIN(@<chead>, const @<cls> *@<obj>);}
+    {void *SOD_XCHAIN(@<chead>, const @<cls> *@<obj>);}
   Performs a `cross-chain upcast'.
 
   Given a pointer @<obj> to an instance of a class of type @<cls> and the