qemu: Add VIR_FREE in ADD_BITMAP

virBitmapFormat returns the string that should be freed.

All strings in three ADD_BITMAP calls in qemuDomainGetGuestVcpusParams
are contained in tmp. So memory leak is possible here without VIR_FREE.

Fixes: 0108deb944
Signed-off-by: Anastasia Belova <abelova@astralinux.ru>
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>

src/qemu/qemu_driver.c

@@ -18420,6 +18420,7 @@ qemuDomainGetGuestVcpusParams(virTypedParameterPtr *params,
         goto cleanup; \
     if (virTypedParamsAddString(&par, &npar, &maxpar, #name, tmp) < 0) \
         goto cleanup; \
+    VIR_FREE(tmp)
 
     ADD_BITMAP(vcpus);
     ADD_BITMAP(online);