Fixed a bug that caused configure with --enable-checking=stringoverrun to have no effect.

ChangeLog

+2011-04-27  Ben Key  <bkey76@gmail.com>
+
+	* configure.in: Fixed a bug that caused configure with
+	--enable-checking=stringoverrun to have no effect.
+
 2011-04-26  Paul Eggert  <eggert@cs.ucla.edu>
 
 	* configure.in: Suppress unnecessary checks for size_t.

configure.in

@@ -294,7 +294,7 @@ if test x$ac_gc_check_stringbytes != x ; then
    strings is redundantly recorded in sdata structures so that it can
    be compared to the sizes recorded in Lisp strings.])
 fi
-if test x$ac_gc_check_stringoverrun != x ; then
+if test x$ac_gc_check_string_overrun != x ; then
   AC_DEFINE(GC_CHECK_STRING_OVERRUN, 1,
 [Define this to check for short string overrun.])
 fi