[PATCH 3/3] libX11/lcUTF8.c fix: dereferenced before check

[walter harms]

* Do not use variables before checked for NULL.

Signed-off-by: Harms <wharms at bfs,de>
---
 src/xlibi18n/lcUTF8.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/xlibi18n/lcUTF8.c b/src/xlibi18n/lcUTF8.c
index 0f3d0d2..bf9619d 100644
--- a/src/xlibi18n/lcUTF8.c
+++ b/src/xlibi18n/lcUTF8.c
@@ -1015,7 +1015,7 @@ ucstocs1(
     XPointer *args,
     int num_args)
 {
-    ucs4_t const *src = (ucs4_t const *) *from;
+    ucs4_t const *src;
     unsigned char *dst = (unsigned char *) *to;
     int unconv_num = 0;
     Utf8Conv *preferred_charsets = (Utf8Conv *) conv->state;
@@ -1026,6 +1026,8 @@ ucstocs1(

     if (from == NULL || *from == NULL)
 	return 0;
+
+    src = (ucs4_t const *) *from;

     count = charset_wctocs_exactly(preferred_charsets, &chosen_charset,
                                    &chosen_side, conv, dst, *src, *to_left);
-- 
1.8.4.5