headers_check: Fix warning text

Fix the warning text too, per Randy.

Cc: Alexander Shishkin <virtuoso@slind.org>
Cc: Michal Marek <mmarek@suse.cz>
Cc: Randy Dunlap <randy.dunlap@oracle.com>
Cc: Stephen Hemminger <shemminger@vyatta.com>
Cc: WANG Cong <amwang@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Michal Marek <mmarek@suse.cz>

scripts/headers_check.pl

@@ -66,8 +66,8 @@ sub check_declarations
 {
 	if ($line =~m/^(\s*extern|unsigned|char|short|int|long|void)\b/) {
 		printf STDERR "$filename:$lineno: " .
-		              "userspace cannot call function or variable " .
-		              "defined in the kernel\n";
+			      "userspace cannot reference function or " .
+			      "variable defined in the kernel\n";
 	}
 }