Sleep for win32

src/installer/kiwix-install.cpp

@@ -187,7 +187,7 @@ int main(int argc, char **argv) {
       if (indexer != NULL) {
 	indexer->start(contentPath, indexPath);
 	while (indexer->isRunning()) {
-#ifndef _WIN32
+#ifdef _WIN32
 	  Sleep(1000);
 #else
 	  sleep(1);