url: mark ignored return value in node::url::Parse(...)

This is to resolve an unused result warning in node_url.cc.
Resolve macro redefinition warning on Windows

PR-URL: #10141
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Michael Dawson <michael_dawson@ca.ibm.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Sam Roberts <vieuxtech@gmail.com>

src/node_url.cc

@@ -62,7 +62,7 @@ using v8::Value;
  url.flags |= URL_FLAGS_TERMINATED; \
  goto done; \
  }
-#define FAILED()  \
+#define URL_FAILED() \
  { \
  url.flags |= URL_FLAGS_FAILED; \
  goto done; \
@@ -744,7 +744,7 @@ namespace url {
  break;
  case kNoScheme:
  if (!has_base || (IS_CANNOT_BE_BASE(base.flags) && ch != '#')) {
- FAILED()
+ URL_FAILED()
  } else if (IS_CANNOT_BE_BASE(base.flags) && ch == '#') {
  SET_HAVE_SCHEME()
  url.scheme = base.scheme;
@@ -982,10 +982,10 @@ namespace url {
  case kHostname:
  if (ch == ':' && !sbflag) {
  if (special && buffer.size() == 0)
- FAILED()
+ URL_FAILED()
  SET_HAVE_HOST()
  if (ParseHost(&buffer, &url.host) < 0)
- FAILED()
+ URL_FAILED()
  buffer.clear();
  state = kPort;
  if (override == kHostname)
@@ -997,10 +997,10 @@ namespace url {
  special_back_slash) {
  p--;
  if (special && buffer.size() == 0)
- FAILED()
+ URL_FAILED()
  SET_HAVE_HOST()
  if (ParseHost(&buffer, &url.host) < 0)
- FAILED()
+ URL_FAILED()
  buffer.clear();
  state = kPathStart;
  if (state_override)
@@ -1029,14 +1029,14 @@ namespace url {
  if (port >= 0 && port <= 0xffff) {
  url.port = NormalizePort(url.scheme, port);
  } else if (!state_override) {
- FAILED()
+ URL_FAILED()
  }
  buffer.clear();
  }
  state = kPathStart;
  continue;
  } else {
- FAILED();
+ URL_FAILED();
  }
  break;
  case kFile:
@@ -1151,7 +1151,7 @@ namespace url {
  if (buffer != "localhost") {
  SET_HAVE_HOST()
  if (ParseHost(&buffer, &url.host) < 0)
- FAILED()
+ URL_FAILED()
  }
  buffer.clear();
  state = kPathStart;
@@ -1294,7 +1294,7 @@ namespace url {
  argv[ARG_PATH] = Copy(isolate, url.path);
  }
 
- cb->Call(context, recv, 9, argv);
+ (void)cb->Call(context, recv, 9, argv);
  }
 
  static void Parse(const FunctionCallbackInfo<Value>& args) {