libclamav: make sure TLS key is initializer (bb #2588)

Thanks to Cameron Brown for the detailed analysis of the bug.

ChangeLog

@@ -1,3 +1,8 @@
+Thu Apr 14 21:29:36 EEST 2011 (edwin)
+-------------------------------------
+ * libclamav/others.c: make sure TLS key is initializer (bb #2588).
+    Thanks to Cameron Brown for the detailed analysis of the bug.
+
 Thu Apr 14 13:19:38 EEST 2011 (edwin)
 -------------------------------------
  * configure: check for enable_extended_FILE_stdio (bb #2542)

libclamav/others_common.c

@@ -96,6 +96,7 @@ void cli_logg_unsetup(void)
 
 static inline void *cli_getctx(void)
 {
+    pthread_once(&cli_ctx_tls_key_once, cli_ctx_tls_key_alloc);
     cli_ctx *ctx = pthread_getspecific(cli_ctx_tls_key);
     return ctx ? ctx->cb_ctx : NULL;
 }