C89 conformance for Python stable ABI

Author: wsfulton

Lib/python/pyhead.swg

@@ -35,10 +35,11 @@ SWIG_PyUnicode_AsUTF8AndSize(PyObject *str, Py_ssize_t *psize, PyObject **pbytes
   *pbytes = NULL;
   return PyUnicode_AsUTF8AndSize(str, psize);
 # else
-   *pbytes = PyUnicode_AsUTF8String(str);
-   const char *chars = *pbytes ? PyBytes_AsString(*pbytes) : NULL;
-   if (chars && psize)
-     *psize = PyBytes_Size(*pbytes);
+  const char *chars;
+  *pbytes = PyUnicode_AsUTF8String(str);
+  chars = *pbytes ? PyBytes_AsString(*pbytes) : NULL;
+  if (chars && psize)
+    *psize = PyBytes_Size(*pbytes);
   return chars;
 # endif
 #else

Lib/python/pyrun.swg

@@ -745,11 +745,14 @@ SwigPyObject_Check(PyObject *op) {
     return 1;
   return (strcmp(op_type->tp_name, "SwigPyObject") == 0);
 #else
+# ifdef Py_LIMITED_API
+  int cmp;
+  PyObject *tp_name;
+#endif
   if (op_type == target_tp)
     return 1;
 # ifdef Py_LIMITED_API
-  int cmp;
-  PyObject *tp_name = PyObject_GetAttrString((PyObject *)op_type, "__name__");
+  tp_name = PyObject_GetAttrString((PyObject *)op_type, "__name__");
   if (!tp_name)
     return 0;
   cmp = PyUnicode_CompareWithASCIIString(tp_name, "SwigPyObject");
@@ -1132,12 +1135,15 @@ SwigPyPacked_type(void) {
 
 SWIGRUNTIMEINLINE int
 SwigPyPacked_Check(PyObject *op) {
+#ifdef Py_LIMITED_API
+  int cmp;
+  PyObject *tp_name;
+#endif
   PyTypeObject* op_type = Py_TYPE(op);
   if (op_type == SwigPyPacked_TypeOnce())
     return 1;
 #ifdef Py_LIMITED_API
-  int cmp;
-  PyObject *tp_name = PyObject_GetAttrString((PyObject *)op_type, "__name__");
+  tp_name = PyObject_GetAttrString((PyObject *)op_type, "__name__");
   if (!tp_name)
     return 0;
   cmp = PyUnicode_CompareWithASCIIString(tp_name, "SwigPyPacked");