qemu: Fix build error introduced in 653137eb957a278b556c6226424aad5395a

The build failure is caused by a false positive of some static analysys
steps done by gcc (that don't happen on -O0).

diff --git a/src/qemu/qemu_driver.c b/src/qemu/qemu_driver.c
index c011151cf922f2831e5912416acb5b79eacc5772..801044ba3aa5a86c63f7a9e240f124f4896f2369 100644 (file)
--- a/src/qemu/qemu_driver.c
+++ b/src/qemu/qemu_driver.c
@@ -15807,7 +15807,7 @@ qemuDomainSetBlockIoTune(virDomainPtr dom,
     int ret = -1;
     size_t i;
     int idx = -1;
-    int conf_idx;
+    int conf_idx = -1;
     bool set_bytes = false;
     bool set_iops = false;
     virQEMUDriverConfigPtr cfg = NULL;