mgr: fix Clang warning on superfluous brackets

```
/home/jenkins/workspace/ceph-master/src/mgr/OSDPerfMetricTypes.h:105:19: warning: braces around scalar initializer [-Wbraced-scalar-init]
        d.regex = {d.regex_str.c_str()};
                  ^~~~~~~~~~~~~~~~~~~~~
1 warning generated.
```

Signed-off-by: Willem Jan Withagen <wjw@digiware.nl>

diff --git a/src/mgr/OSDPerfMetricTypes.h b/src/mgr/OSDPerfMetricTypes.h
index 38bbd2c69d14424ba4178d5880c48b3039776afc..c3d281e235a368e220e3d971693bf87ab0325084 100644 (file)
--- a/src/mgr/OSDPerfMetricTypes.h
+++ b/src/mgr/OSDPerfMetricTypes.h
@@ -102,7 +102,7 @@ struct denc_traits<OSDPerfMetricKeyDescriptor> {
         return;
       }
       try {
-        d.regex = {d.regex_str.c_str()};
+        d.regex = d.regex_str.c_str();
       } catch (const std::regex_error& e) {
         v.clear();
         return;