[Python-checkins] Fix compiler warning about non initialised variable (GH-11806)

[Pablo Galindo]

https://github.com/python/cpython/commit/164686f33aeff403e99ab31087e77192ccbbed10
commit: 164686f33aeff403e99ab31087e77192ccbbed10
branch: master
author: Pablo Galindo <Pablogsal at gmail.com>
committer: GitHub <noreply at github.com>
date: 2019-02-10T20:37:07Z
summary:

Fix compiler warning about non initialised variable (GH-11806)

files:
M Python/ast.c

diff --git a/Python/ast.c b/Python/ast.c
index 4fa98b17f880..76588c345f27 100644
--- a/Python/ast.c
+++ b/Python/ast.c
@@ -1366,7 +1366,7 @@ handle_keywordonly_args(struct compiling *c, const node *n, int start,
     PyObject *argname;
     node *ch;
     expr_ty expression, annotation;
-    arg_ty arg;
+    arg_ty arg = NULL;
     int i = start;
     int j = 0; /* index for kwdefaults and kwonlyargs */
 
@@ -1462,7 +1462,7 @@ ast_for_arguments(struct compiling *c, const node *n)
     int nposdefaults = 0, found_default = 0;
     asdl_seq *posargs, *posdefaults, *kwonlyargs, *kwdefaults;
     arg_ty vararg = NULL, kwarg = NULL;
-    arg_ty arg;
+    arg_ty arg = NULL;
     node *ch;
 
     if (TYPE(n) == parameters) {