Fixed warnings.

diff --git a/msdos/dosconf.c b/msdos/dosconf.c
index 97ddb56..8243916 100644
--- a/msdos/dosconf.c
+++ b/msdos/dosconf.c
@@ -208,7 +208,9 @@
 
 static int DOSCONF_Install(char **confline)
 {
+#if 0
     int loadhigh = 0;
+#endif
 
     *confline += 7; /* strlen("INSTALL") */
     if (!(DOSCONF_JumpToEntry(confline, '='))) return 0;