merge back from branch victor.solaris

git-svn-id: http://opensvn.csie.org/pttbbs/trunk/pttbbs@2189 63ad8ddf-47c3-0310-b6dd-a9e9d9715204

1 files changed, 1 insertions, 1 deletions

diff --git a/mbbsd/io.c b/mbbsd/io.c
index 75d38c96..48ea042f 100644
--- a/mbbsd/io.c
+++ b/mbbsd/io.c
@@ -636,7 +636,7 @@ oldgetdata(int line, int col, char *prompt, char *buf, int len, int echo)
 	outc('\n');
 	refresh();
     }
-    if ((echo == LCECHO) && isupper(buf[0]))
+    if ((echo == LCECHO) && isupper((int)buf[0]))
 	buf[0] = tolower(buf[0]);
     return clen;
 }