MINOR: objtype: report a few missing types in names and base pointers

Types DNS_SRVRQ and CS were not referenced in the type to string
conversions, causing possibly misleading outputs in session dumps.
Now instead of showing "NONE" for unknown invalid types names, we
display "!INVAL!" to clear the confusion that may exist in case of
memory corruption for example.
diff --git a/include/proto/obj_type.h b/include/proto/obj_type.h
index 617464c..47273ca 100644
--- a/include/proto/obj_type.h
+++ b/include/proto/obj_type.h
@@ -42,13 +42,16 @@
 static inline const char *obj_type_name(enum obj_type *t)
 {
 	switch (obj_type(t)) {
+	case OBJ_TYPE_NONE:     return "NONE";
 	case OBJ_TYPE_LISTENER: return "LISTENER";
 	case OBJ_TYPE_PROXY:    return "PROXY";
 	case OBJ_TYPE_SERVER:   return "SERVER";
 	case OBJ_TYPE_APPLET:   return "APPLET";
 	case OBJ_TYPE_APPCTX:   return "APPCTX";
 	case OBJ_TYPE_CONN:     return "CONN";
-	default:                return "NONE";
+	case OBJ_TYPE_SRVRQ:    return "SRVRQ";
+	case OBJ_TYPE_CS:       return "CS";
+	default:                return "!INVAL!";
 	}
 }
 
@@ -158,14 +161,16 @@
 static inline void *obj_base_ptr(enum obj_type *t)
 {
 	switch (obj_type(t)) {
+	case OBJ_TYPE_NONE:     return NULL;
 	case OBJ_TYPE_LISTENER: return __objt_listener(t);
 	case OBJ_TYPE_PROXY:    return __objt_proxy(t);
 	case OBJ_TYPE_SERVER:   return __objt_server(t);
 	case OBJ_TYPE_APPLET:   return __objt_applet(t);
 	case OBJ_TYPE_APPCTX:   return __objt_appctx(t);
 	case OBJ_TYPE_CONN:     return __objt_conn(t);
+	case OBJ_TYPE_SRVRQ:    return __objt_dns_srvrq(t);
 	case OBJ_TYPE_CS:       return __objt_cs(t);
-	default:                return NULL;
+	default:                return t; // exact pointer for invalid case
 	}
 }