Re #18521: remove assignments of variables that are immediately reassigned.
diff --git a/Python/pystrtod.c b/Python/pystrtod.c
index f8d3b35..b8dd919 100644
--- a/Python/pystrtod.c
+++ b/Python/pystrtod.c
@@ -164,7 +164,7 @@
 _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;