Fixed clearing UTF-8 context for two-byte codepoints.
diff --git a/src/njs_utf8.h b/src/njs_utf8.h
index f9518ca..5c870d4 100644
--- a/src/njs_utf8.h
+++ b/src/njs_utf8.h
@@ -103,6 +103,7 @@
 njs_utf8_decode_init(njs_unicode_decode_t *ctx)
 {
     ctx->need = 0x00;
+    ctx->lower = 0x00;
 }