[PATCH] qemuAssignDeviceInputAlias: Be tolerant to pre-existent alias

[Michal Privoznik <mprivozn@xxxxxxxxxx>]

This is missing in 6bc4a371cf and therefore we are effectively
overwriting user provided aliases for <input/> devices.

Signed-off-by: Michal Privoznik <mprivozn@xxxxxxxxxx>
---
 src/qemu/qemu_alias.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/qemu/qemu_alias.c b/src/qemu/qemu_alias.c
index ae30f7df8..d0ca15bae 100644
--- a/src/qemu/qemu_alias.c
+++ b/src/qemu/qemu_alias.c
@@ -513,6 +513,9 @@ qemuAssignDeviceInputAlias(virDomainDefPtr def,
                            virDomainInputDefPtr input,
                            int idx)
 {
+    if (input->info.alias)
+        return 0;
+
     if (idx == -1) {
         int thisidx;
         size_t i;
-- 
2.16.1

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