ldso: add missing prototypes

Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>

ldso/include/ldso.h

@@ -72,6 +72,11 @@ extern char *_dl_ldsopath;             /* Where the shared lib loader was found
 extern const char *_dl_progname;       /* The name of the executable being run */
 extern size_t _dl_pagesize;            /* Store the page size for use later */
 
+#ifdef USE_TLS
+extern void _dl_add_to_slotinfo (struct link_map  *l);
+extern void ** __attribute__ ((const)) _dl_initial_error_catch_tsd (void);
+#endif
+
 #ifdef __SUPPORT_LD_DEBUG__
 extern char *_dl_debug;
 extern char *_dl_debug_symbols;