libdl: no need for _dl_strstr in libdl, use strstr

Signed-off-by: Peter S. Mazinger <ps.m@gmx.net>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>

ldso/include/dl-string.h

@@ -204,7 +204,6 @@ static __always_inline char * _dl_get_last_path_component(char *path)
 # define _dl_strcpy strcpy
 # define _dl_strcmp strcmp
 # define _dl_strrchr strrchr
-# define _dl_strstr strstr
 # define _dl_memcpy memcpy
 # define _dl_memcmp memcmp
 # define _dl_memset memset

ldso/libdl/libdl.c

@@ -335,7 +335,7 @@ static void *do_dlopen(const char *libname, int flag)
 # ifdef __SUPPORT_LD_DEBUG__
 	_dl_debug = getenv("LD_DEBUG");
 	if (_dl_debug) {
-		if (_dl_strstr(_dl_debug, "all")) {
+		if (strstr(_dl_debug, "all")) {
 			_dl_debug_detail = _dl_debug_move = _dl_debug_symbols
 				= _dl_debug_reloc = _dl_debug_bindings = _dl_debug_nofixups = (void*)1;
 		} else {