scripted-diff: Rename misleading 'defaultPort' to 'http_port'

-BEGIN VERIFY SCRIPT-
sed -i -e 's/\<defaultPort\>/http_port/g' src/httpserver.cpp
-END VERIFY SCRIPT-

Author: murrayn

src/httpserver.cpp

@@ -292,26 +292,26 @@ static bool ThreadHTTP(struct event_base* base)
 /** Bind HTTP server to specified addresses */
 static bool HTTPBindAddresses(struct evhttp* http)
 {
-    int defaultPort = gArgs.GetArg("-rpcport", BaseParams().RPCPort());
+    int http_port = gArgs.GetArg("-rpcport", BaseParams().RPCPort());
     std::vector<std::pair<std::string, uint16_t> > endpoints;
 
     // Determine what addresses to bind to
     if (!gArgs.IsArgSet("-rpcallowip")) { // Default to loopback if not allowing external IPs
-        endpoints.push_back(std::make_pair("::1", defaultPort));
-        endpoints.push_back(std::make_pair("127.0.0.1", defaultPort));
+        endpoints.push_back(std::make_pair("::1", http_port));
+        endpoints.push_back(std::make_pair("127.0.0.1", http_port));
         if (gArgs.IsArgSet("-rpcbind")) {
             LogPrintf("WARNING: option -rpcbind was ignored because -rpcallowip was not specified, refusing to allow everyone to connect\n");
         }
     } else if (gArgs.IsArgSet("-rpcbind")) { // Specific bind address
         for (const std::string& strRPCBind : gArgs.GetArgs("-rpcbind")) {
-            int port = defaultPort;
+            int port = http_port;
             std::string host;
             SplitHostPort(strRPCBind, port, host);
             endpoints.push_back(std::make_pair(host, port));
         }
     } else { // No specific bind address specified, bind to any
-        endpoints.push_back(std::make_pair("::", defaultPort));
-        endpoints.push_back(std::make_pair("0.0.0.0", defaultPort));
+        endpoints.push_back(std::make_pair("::", http_port));
+        endpoints.push_back(std::make_pair("0.0.0.0", http_port));
     }
 
     // Bind addresses