fix build

Signed-off-by: wangbaiping/wbpcode <[email protected]>

Author: wbpcode

example/BUILD

@@ -26,11 +26,17 @@ proxy_wasm_cc_binary(
     srcs = ["http_proto_example.cc"],
     copts = ["-std=c++17"],
     protobuf = "lite",
+    deps = [
+        "@com_google_protobuf//:struct_cc_proto",
+    ],
 )
 
 proxy_wasm_cc_binary(
     name = "http_proto_example_full.wasm",
     srcs = ["http_proto_example.cc"],
     copts = ["-std=c++17"],
     protobuf = "full",
+    deps = [
+        "@com_google_protobuf//:struct_cc_proto",
+    ],
 )