fix getline(3) memory leaks

src/lxc/attach.c

@@ -114,6 +114,7 @@ struct lxc_proc_context_info *lxc_proc_get_context_info(pid_t pid)
 		}
 	}
 
+	free(line);
 	fclose(proc_file);
 
 	if (!found) {
@@ -145,7 +146,6 @@ struct lxc_proc_context_info *lxc_proc_get_context_info(pid_t pid)
 
 out_error:
 	free(info);
-	free(line);
 	return NULL;
 }
 

src/lxc/cgroup.c

@@ -503,6 +503,7 @@ static char *get_all_cgroups(void)
 	}
 
 out:
+	free(line);
 	fclose(f);
 	return ret;
 }