Add missing comma.

config/cxx.m4

 # Macros to detect certain C++ features
-# $Header: /cvsroot/pgsql/config/Attic/cxx.m4,v 1.2 2002/03/29 17:32:53 petere Exp $
+# $Header: /cvsroot/pgsql/config/Attic/cxx.m4,v 1.3 2002/03/29 20:54:33 petere Exp $
 
 
 # PGAC_CLASS_STRING
@@ -12,7 +12,7 @@ AC_DEFUN([PGAC_CLASS_STRING],
 [AC_LANG_PUSH(C++)
 AC_CHECK_HEADER(string,
                 [AC_DEFINE(HAVE_CXX_STRING_HEADER, 1,
-                           [Define to 1 if you have the C++ <string> header])]
+                           [Define to 1 if you have the C++ <string> header])],
                 [AC_CACHE_CHECK([for class string in <string.h>],
                                 [pgac_cv_class_string_in_string_h],
 [AC_TRY_COMPILE([#include <stdio.h>

configure

@@ -7916,6 +7916,7 @@ cat >>confdefs.h <<\_ACEOF
 #define HAVE_CXX_STRING_HEADER 1
 _ACEOF
 
+else
   echo "$as_me:$LINENO: checking for class string in <string.h>" >&5
 echo $ECHO_N "checking for class string in <string.h>... $ECHO_C" >&6
 if test "${pgac_cv_class_string_in_string_h+set}" = set; then