Use unsigned char as argument to isspace(), from Michael ven Elst.

git-svn-id: svn://svn.h5l.se/heimdal/trunk/heimdal@22646 ec53bebd-3082-4978-b11e-865c3cabbd6b

lib/hx509/softp11.c

@@ -704,7 +704,7 @@ read_conf_file(const char *fn, CK_USER_TYPE userType, const char *pin)
 	st_logf("line: %s\n", buf);
 
 	p = buf;
-	while (isspace(*p))
+	while (isspace((unsigned char)*p))
 	    p++;
 	if (*p == '#')
 	    continue;