Re #18521: remove assignments of variables that are immediately reassigned.

Modules/socketmodule.c

@@ -5155,7 +5155,7 @@ socket_getaddrinfo(PyObject *self, PyObject *args, PyObject* kwargs)
     PyObject *all = (PyObject *)NULL;
     PyObject *idna = NULL;
 
-    family = socktype = protocol = flags = 0;
+    socktype = protocol = flags = 0;
     family = AF_UNSPEC;
     if (!PyArg_ParseTupleAndKeywords(args, kwargs, "OO|iiii:getaddrinfo",
                           kwnames, &hobj, &pobj, &family, &socktype,

Python/pystrtod.c

@@ -164,7 +164,7 @@ static double
 _PyOS_ascii_strtod(const char *nptr, char **endptr)
 {
     char *fail_pos;
-    double val = -1.0;
+    double val;
     struct lconv *locale_data;
     const char *decimal_point;
     size_t decimal_point_len;