openldap: fix `-Wtentative-definition-compat`

It's a `-Weverything` warning that appeared in llvm/clang 21.

```
lib/openldap.c:1297:19: warning: duplicate declaration of 'ldapsb_tls' is invalid in C++ [-Wtentative-definition-compat]
 1297 | static Sockbuf_IO ldapsb_tls =
      |                   ^
lib/openldap.c:499:19: note: previous declaration is here
  499 | static Sockbuf_IO ldapsb_tls;
      |                   ^
```

Reported-by: correctmost on github
Fixes #18470
Cherry-picked from #18477
Closes #18485

diff --git a/lib/openldap.c b/lib/openldap.c
index 1b32e12b6861cb3442f7b1743b6e73af63e5cc87..da26d4a78d0638af65053b54d32e3b8ed32895c2 100644 (file)
--- a/lib/openldap.c
+++ b/lib/openldap.c
@@ -496,7 +496,24 @@ static CURLcode oldap_perform_sasl(struct Curl_easy *data)
 }
 
 #ifdef USE_SSL
-static Sockbuf_IO ldapsb_tls;
+static int ldapsb_tls_setup(Sockbuf_IO_Desc *sbiod, void *arg);
+static int ldapsb_tls_remove(Sockbuf_IO_Desc *sbiod);
+static int ldapsb_tls_ctrl(Sockbuf_IO_Desc *sbiod, int opt, void *arg);
+static ber_slen_t ldapsb_tls_read(Sockbuf_IO_Desc *sbiod, void *buf,
+                                  ber_len_t len);
+static ber_slen_t ldapsb_tls_write(Sockbuf_IO_Desc *sbiod, void *buf,
+                                   ber_len_t len);
+static int ldapsb_tls_close(Sockbuf_IO_Desc *sbiod);
+
+static Sockbuf_IO ldapsb_tls =
+{
+  ldapsb_tls_setup,
+  ldapsb_tls_remove,
+  ldapsb_tls_ctrl,
+  ldapsb_tls_read,
+  ldapsb_tls_write,
+  ldapsb_tls_close
+};
 
 static bool ssl_installed(struct connectdata *conn)
 {
@@ -1293,16 +1310,6 @@ ldapsb_tls_write(Sockbuf_IO_Desc *sbiod, void *buf, ber_len_t len)
   }
   return ret;
 }
-
-static Sockbuf_IO ldapsb_tls =
-{
-  ldapsb_tls_setup,
-  ldapsb_tls_remove,
-  ldapsb_tls_ctrl,
-  ldapsb_tls_read,
-  ldapsb_tls_write,
-  ldapsb_tls_close
-};
 #endif /* USE_SSL */
 
 #endif /* !CURL_DISABLE_LDAP && USE_OPENLDAP */