pass int instead of char to fgetc(). Noticed by pval@ on macppc after his

HD filled with a nice 33GB backup score file.
--
Patch from pval@

games/dopewars/patches/patch-src_serverside_c

@@ -0,0 +1,13 @@
+$OpenBSD: patch-src_serverside_c,v 1.1 2002/03/07 01:59:15 brad Exp $
+--- src/serverside.c.orig	Sun Feb  3 13:28:28 2002
++++ src/serverside.c	Wed Mar  6 15:02:09 2002
+@@ -1548,7 +1548,8 @@ static void HighScoreWriteHeader(FILE *f
+ void ConvertHighScoreFile(void) {
+ /* Converts an old format high score file to the new format. */
+    FILE *old,*backup;
+-   gchar *BackupFile,ch;
++   gchar *BackupFile;
++   int ch;
+    char *OldError=NULL,*BackupError=NULL;
+    struct HISCORE MultiScore[NUMHISCORE],AntiqueScore[NUMHISCORE];
+