Add missing endl.

Test: pass
Change-Id: Ib7c866784eccb2179c59a6ca9ca5e1a183cdf3aa
diff --git a/check_vintf.cpp b/check_vintf.cpp
index 1c9f92e..32063ad 100644
--- a/check_vintf.cpp
+++ b/check_vintf.cpp
@@ -59,7 +59,7 @@
                    std::string* error) const override {
         auto resolved = resolve(path);
         if (resolved.empty()) {
-            std::cerr << "Error: Cannot resolve path " << path;
+            std::cerr << "Error: Cannot resolve path " << path << std::endl;
             return UNKNOWN_ERROR;
         }
         status_t status = details::FileSystemImpl::fetch(resolved, fetched, error);
@@ -70,7 +70,7 @@
                        std::string* error) const override {
         auto resolved = resolve(path);
         if (resolved.empty()) {
-            std::cerr << "Error: Cannot resolve path " << path;
+            std::cerr << "Error: Cannot resolve path " << path << std::endl;
             return UNKNOWN_ERROR;
         }
         status_t status = details::FileSystemImpl::listFiles(resolved, out, error);