undef isasc before redining it.

diff --git a/lib/backupfile.c b/lib/backupfile.c
index 5d8fe25facaba2950e4414c64a25417bc926bb38..7a624cfece6d890f6a464d5a6ec3807c346f793b 100644 (file)
--- a/lib/backupfile.c
+++ b/lib/backupfile.c
@@ -61,6 +61,7 @@ char *malloc ();
 #endif
 
 #if !defined (isascii) || defined (STDC_HEADERS)
+#undef isascii
 #define isascii(c) 1
 #endif