gh-106905: avoid incorrect SystemError about recursion depth mismatch (#106906)

* gh-106905: avoid incorrect SystemError about recursion depth mismatch

* Update Misc/NEWS.d/next/Core and Builtins/2023-07-20-11-41-16.gh-issue-106905.AyZpuB.rst

---------

Co-authored-by: Shantanu <[email protected]>
Co-authored-by: Serhiy Storchaka <[email protected]>

Author: 3 people

Misc/NEWS.d/next/Core and Builtins/2023-07-20-11-41-16.gh-issue-106905.AyZpuB.rst

@@ -0,0 +1 @@
+Fix incorrect SystemError about AST constructor recursion depth mismatch.

Parser/asdl_c.py

@@ -1286,6 +1286,7 @@ def func_end(self):
         self.emit("state->recursion_depth--;", 1)
         self.emit("return result;", 1)
         self.emit("failed:", 0)
+        self.emit("state->recursion_depth--;", 1)
         self.emit("Py_XDECREF(value);", 1)
         self.emit("Py_XDECREF(result);", 1)
         self.emit("return NULL;", 1)