fix signed/unsigned char lossage

diff --git a/backup/dump_db.pc b/backup/dump_db.pc
index d67c5595e7fa7bc72d548ae7c6c44172eccb3527..c1ed4cdb92ed2e61a0375b8f759900dbf13cef0d 100644 (file)
--- a/backup/dump_db.pc
+++ b/backup/dump_db.pc
@@ -58,7 +58,7 @@ void wpunt(void)
 
 void dump_str(FILE *f, char *str)
 {
-  char *ibp, c;
+  unsigned char *ibp, c;
   int t;
 
   for (ibp = str; (c = *ibp); ibp++)