PATCH: Fix crash parsing input devices for QEMU

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There is an edge case in parsing of input devices where if you have a PS2
mouse defined, before a USB tablet, it could generate a null pointer
deference & thus crash. Normally you'd only have one pointer defined, but
one might add a USB tablet for getting a improved mouse experience.

Dan.
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Index: src/qemu_conf.c
===================================================================
RCS file: /data/cvs/libvirt/src/qemu_conf.c,v
retrieving revision 1.14
diff -u -p -r1.14 qemu_conf.c
--- src/qemu_conf.c	21 Sep 2007 21:20:32 -0000	1.14
+++ src/qemu_conf.c	26 Sep 2007 00:42:05 -0000
@@ -1312,7 +1312,7 @@ static struct qemud_vm_def *qemudParseXM
             }
             def->ninputs++;
             input->next = NULL;
-            if (i == 0) {
+            if (def->inputs == NULL) {
                 def->inputs = input;
             } else {
                 prev->next = input;
--
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