apps/req.c: Increment the right variable when parsing '+'

Reviewed-by: NRich Salz <rsalz@openssl.org>

apps/req.c

@@ -1109,12 +1109,12 @@ static int auto_info(X509_REQ *req, STACK_OF(CONF_VALUE) *dn_sk,
             }
         }
 #ifndef CHARSET_EBCDIC
-        plus_char = (*p == '+');
+        plus_char = (*type == '+');
 #else
-        plus_char = (*p == os_toascii['+']);
+        plus_char = (*type == os_toascii['+']);
 #endif
         if (plus_char) {
-            p++;
+            type++;
             mval = -1;
         } else
             mval = 0;