rbd: make sure the return-value 'r' will be returned.

Signed-off-by: Shiyang Ruan <ruansy.fnst@cn.fujitsu.com>

diff --git a/src/tools/rbd/action/DiskUsage.cc b/src/tools/rbd/action/DiskUsage.cc
index 57447cd9f6125ce21786d79394b500242adb3757..abc9cf41862649ce317d90b22fffd7a1b4abb731 100644 (file)
--- a/src/tools/rbd/action/DiskUsage.cc
+++ b/src/tools/rbd/action/DiskUsage.cc
@@ -132,7 +132,7 @@ static int do_disk_usage(librbd::RBD &rbd, librados::IoCtx &io_ctx,
     }
 
     uint64_t features;
-    int r = image.features(&features);
+    r = image.features(&features);
     if (r < 0) {
       std::cerr << "rbd: failed to retrieve image features: " << cpp_strerror(r)
                 << std::endl;