[PATCH] xkb: check for NULL pointer before dereferences it in XkbWriteXKBSymbols

[Tiago Vignatti]

move srv assignment to before it's being used. Also, check for xkb being nil.

Signed-off-by: Tiago Vignatti <tiago.vignatti at nokia.com>
---
Alan, I had amend your correction.

 xkb/xkbout.c |    9 +++++++--
 1 files changed, 7 insertions(+), 2 deletions(-)

diff --git a/xkb/xkbout.c b/xkb/xkbout.c
index 68ede90..082c85e 100644
--- a/xkb/xkbout.c
+++ b/xkb/xkbout.c
@@ -353,9 +353,13 @@ XkbClientMapPtr		map;
 XkbServerMapPtr		srv;
 Bool			showActions;
 
+    if (!xkb) {
+	_XkbLibError(_XkbErrMissingSymbols,"XkbWriteXKBSymbols",0);
+	return FALSE;
+    }
+
     map= xkb->map;
-    srv= xkb->server;
-    if ((!xkb)||(!map)||(!map->syms)||(!map->key_sym_map)) {
+    if ((!map)||(!map->syms)||(!map->key_sym_map)) {
 	_XkbLibError(_XkbErrMissingSymbols,"XkbWriteXKBSymbols",0);
 	return FALSE;
     }
@@ -376,6 +380,7 @@ Bool			showActions;
     }
     if (tmp>0)
 	fprintf(file,"\n");
+    srv= xkb->server;
     for (i=xkb->min_key_code;i<=xkb->max_key_code;i++) {
 	Bool	simple;
 	if ((int)XkbKeyNumSyms(xkb,i)<1)
-- 
1.6.0.4