osd/ECBackend.cc: fix MISSING_BREAK

Fix for:
CID 1297854 (#1 of 1): Missing break in switch (MISSING_BREAK)
 unterminated_case: The case for value ECBackend::RecoveryOp::COMPLETE
 is not terminated by a 'break' statement.

Signed-off-by: Danny Al-Gaaf <danny.al-gaaf@bisect.de>

src/osd/ECBackend.cc

@@ -594,11 +594,11 @@ void ECBackend::continue_recovery_op(
       }
       return;
     }
-    case RecoveryOp::COMPLETE: {
-      assert(0); // should never be called once complete
-    };
-    default:
+    // should never be called once complete
+    case RecoveryOp::COMPLETE:
+    default: {
       assert(0);
+    };
     }
   }
 }