THRIFT-348. cpp: Fix readBool for vectors of bools (again)

This bug only affected the returned number bytes read
(which is not currently used), not the actual bool value.


git-svn-id: https://svn.apache.org/repos/asf/incubator/thrift/trunk@747635 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/lib/cpp/src/protocol/TProtocol.h b/lib/cpp/src/protocol/TProtocol.h
index 5dcea2b..4507d91 100644
--- a/lib/cpp/src/protocol/TProtocol.h
+++ b/lib/cpp/src/protocol/TProtocol.h
@@ -217,6 +217,7 @@
     bool value;
     uint32_t rv = readBool(value);
     ref = value;
+    return rv;
   }
 
   /**