SDL: fix build failure after commit 2a8d00634ddf if strtod isn't available.

From 887ae0c6eb9a10ee8f76a1465f5788077e650639 Mon Sep 17 00:00:00 2001
From: Ozkan Sezer <[EMAIL REDACTED]>
Date: Tue, 20 Sep 2022 18:20:00 +0300
Subject: [PATCH] fix build failure after commit 2a8d00634ddf if strtod isn't
 available.

---
 src/stdlib/SDL_string.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/stdlib/SDL_string.c b/src/stdlib/SDL_string.c
index d5ce0010dbc..7e8c3a7083e 100644
--- a/src/stdlib/SDL_string.c
+++ b/src/stdlib/SDL_string.c
@@ -53,7 +53,7 @@ static unsigned UTF8_TrailingBytes(unsigned char c)
         return 0;
 }
 
-#if !defined(HAVE_VSSCANF) || !defined(HAVE_STRTOL)
+#if !defined(HAVE_VSSCANF) || !defined(HAVE_STRTOL) || !defined(HAVE_STRTOD)
 static size_t
 SDL_ScanLong(const char *text, int count, int radix, long *valuep)
 {