fix condition for nil pointer in common config

proxy/pkg/config/parser/parse.go

@@ -25,7 +25,7 @@ func ParseConfig(cfg *config.Config) error {
 			Color:  cfg.Commons.Log.Color,
 			File:   cfg.Commons.Log.File,
 		}
-	} else if cfg.Log == nil && cfg.Commons == nil {
+	} else if cfg.Log == nil {
 		cfg.Log = &config.Log{}
 	}
 	// provide with defaults for shared tracing, since we need a valid destination address for BindEnv.
@@ -36,7 +36,7 @@ func ParseConfig(cfg *config.Config) error {
 			Endpoint:  cfg.Commons.Tracing.Endpoint,
 			Collector: cfg.Commons.Tracing.Collector,
 		}
-	} else if cfg.Tracing == nil && cfg.Commons == nil {
+	} else if cfg.Tracing == nil {
 		cfg.Tracing = &config.Tracing{}
 	}