urlmon: Fix pointer cast warnings on 64-bit.

dlls/urlmon/http.c

@@ -397,7 +397,7 @@ static HRESULT WINAPI HttpProtocol_Start(IInternetProtocol *iface, LPCWSTR szUrl
     InternetSetStatusCallbackW(This->internet, HTTPPROTOCOL_InternetStatusCallback);
 
     This->connect = InternetConnectW(This->internet, host, url.nPort, user,
-                                     pass, INTERNET_SERVICE_HTTP, 0, (DWORD)This);
+                                     pass, INTERNET_SERVICE_HTTP, 0, (DWORD_PTR)This);
     if (!This->connect)
     {
         WARN("InternetConnect failed: %d\n", GetLastError());
@@ -425,7 +425,7 @@ static HRESULT WINAPI HttpProtocol_Start(IInternetProtocol *iface, LPCWSTR szUrl
                                      wszBindVerb[This->bind_info.dwBindVerb] :
                                      This->bind_info.szCustomVerb,
                                      path, NULL, NULL, (LPCWSTR *)accept_mimes,
-                                     request_flags, (DWORD)This);
+                                     request_flags, (DWORD_PTR)This);
     if (!This->request)
     {
         WARN("HttpOpenRequest failed: %d\n", GetLastError());

dlls/urlmon/umon.c

@@ -606,7 +606,7 @@ static HRESULT URLMonikerImpl_BindToStorage_hack(LPCWSTR URLName, IBindCtx* pbc,
                     }
 
                     bind->hconnect = InternetConnectW(bind->hinternet, host, url.nPort, user, pass,
-                                                      dwService, 0, (DWORD)bind);
+                                                      dwService, 0, (DWORD_PTR)bind);
                     if (!bind->hconnect)
                     {
                             hres = HRESULT_FROM_WIN32(GetLastError());
@@ -650,7 +650,7 @@ static HRESULT URLMonikerImpl_BindToStorage_hack(LPCWSTR URLName, IBindCtx* pbc,
                         break;
 
                     case INTERNET_SERVICE_HTTP:
-                        bind->hrequest = HttpOpenRequestW(bind->hconnect, NULL, path, NULL, NULL, NULL, 0, (DWORD)bind);
+                        bind->hrequest = HttpOpenRequestW(bind->hconnect, NULL, path, NULL, NULL, NULL, 0, (DWORD_PTR)bind);
                         if (!bind->hrequest)
                         {
                                 hres = HRESULT_FROM_WIN32(GetLastError());