SDL: filesystem: SDL_GlobDirectory shouldn't strip final '/' if the path is "/".

SDL Commits
1 
From 6a7f8b74f1c7bd6e41986ddb43b8ff331a9e3322 Mon Sep 17 00:00:00 2001
From: "Ryan C. Gordon" <[EMAIL REDACTED]>
Date: Sun, 29 Sep 2024 23:09:04 -0400
Subject: [PATCH] filesystem: SDL_GlobDirectory shouldn't strip final '/' if
 the path is "/".

This is common on Emscripten, where the base directory is "/".
---
 src/filesystem/SDL_filesystem.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/filesystem/SDL_filesystem.c b/src/filesystem/SDL_filesystem.c
index 2f2b66c94a9bb..a29ae38fdda20 100644
--- a/src/filesystem/SDL_filesystem.c
+++ b/src/filesystem/SDL_filesystem.c
@@ -363,7 +363,7 @@ char **SDL_InternalGlobDirectory(const char *path, const char *pattern, SDL_Glob
     // if path ends with any '/', chop them off, so we don't confuse the pattern matcher later.
     char *pathcpy = NULL;
     size_t pathlen = SDL_strlen(path);
-    if (pathlen && (path[pathlen-1] == '/')) {
+    if ((pathlen > 1) && (path[pathlen-1] == '/')) {
         pathcpy = SDL_strdup(path);
         if (!pathcpy) {
             return NULL;