fix(libscan): delete map that keeps all file contents detected by FindLock to save memory (#1556)

* fix(libscan): delete Map that keeps all files detected by FindLock to save memory

* continue analyzing libs if err occurred

* FindLockDirs

* fix

* fix

scanner/executil.go

@@ -128,7 +128,6 @@ func parallelExec(fn func(osTypeInterface) error, timeoutSec ...int) {
 		}
 	}
 	servers = successes
-	return
 }
 
 func exec(c config.ServerInfo, cmd string, sudo bool, log ...logging.Logger) (result execResult) {