[Common] fix parseDisjointPoolConfig

returning {} when EnableBuffers is false means
returning a defult-constructed DisjointPoolAllConfigs struct which
has EnableBuffers set to 1. Fix this by always returning properly
constructed DisjointPoolAllConfigs.

Author: igchor

source/common/umf_pools/disjoint_pool_config_parser.cpp

@@ -215,6 +215,8 @@ DisjointPoolAllConfigs parseDisjointPoolConfig(const std::string &config,
         }
     }
 
+    AllConfigs.EnableBuffers = EnableBuffers;
+
     AllConfigs.limits = std::shared_ptr<umf_disjoint_pool_shared_limits_t>(
         umfDisjointPoolSharedLimitsCreate(MaxSize),
         umfDisjointPoolSharedLimitsDestroy);
@@ -224,10 +226,6 @@ DisjointPoolAllConfigs parseDisjointPoolConfig(const std::string &config,
         Config.PoolTrace = trace;
     }
 
-    if (!EnableBuffers) {
-        return {};
-    }
-
     if (!trace) {
         return AllConfigs;
     }