More Char/HChar fixes and constification.


git-svn-id: svn://svn.valgrind.org/valgrind/trunk@13088 a5019735-40e9-0310-863c-91ae7b9d1cf9
diff --git a/coregrind/pub_core_libcfile.h b/coregrind/pub_core_libcfile.h
index 265b280..8e7c20b 100644
--- a/coregrind/pub_core_libcfile.h
+++ b/coregrind/pub_core_libcfile.h
@@ -65,7 +65,7 @@
 
 extern Int VG_(socket) ( Int domain, Int type, Int protocol );
 
-extern Int VG_(write_socket)( Int sd, void *msg, Int count );
+extern Int VG_(write_socket)( Int sd, const void *msg, Int count );
 extern Int VG_(getsockname) ( Int sd, struct vki_sockaddr *name, Int *namelen );
 extern Int VG_(getpeername) ( Int sd, struct vki_sockaddr *name, Int *namelen );
 extern Int VG_(getsockopt)  ( Int sd, Int level, Int optname,