fix a (very unlikely) page leak

diff --git a/ldso/ldso/dl-elf.c b/ldso/ldso/dl-elf.c
index a788f8e..241d022 100644 (file)
--- a/ldso/ldso/dl-elf.c
+++ b/ldso/ldso/dl-elf.c
@@ -698,6 +698,9 @@ void _dl_dprintf(int fd, const char *fmt, ...)
        char *start, *ptr, *string;
        static char *buf;
 
+       if (!fmt)
+               return;
+
        buf = _dl_mmap((void *) 0, _dl_pagesize, PROT_READ | PROT_WRITE,
                        MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
        if (_dl_mmap_check_error(buf)) {
@@ -707,9 +710,6 @@ void _dl_dprintf(int fd, const char *fmt, ...)
 
        start = ptr = buf;
 
-       if (!fmt)
-               return;
-
        if (_dl_strlen(fmt) >= (_dl_pagesize - 1)) {
                _dl_write(fd, "overflow\n", 11);
                _dl_exit(20);