Do not enforce source type of console[0]

If console[0] is an alias for serial[0], do not enforce the former to
have a PTY source type. This breaks serial consoles on stdio and makes
no sense.
Signed-off-by: NJan Kiszka <jan.kiszka@siemens.com>

AUTHORS

@@ -231,6 +231,7 @@ Patches have also been contributed by:
   Ilja Livenson        <ilja.livenson@gmail.com>
   Stefan Bader         <stefan.bader@canonical.com>
   MATSUDA Daiki        <matsudadik@intellilink.co.jp>
+  Jan Kiszka           <jan.kiszka@siemens.com>
 
   [....send patches to get your name here....]
 

src/qemu/qemu_process.c

@@ -1497,7 +1497,6 @@ qemuProcessFindCharDevicePTYs(virDomainObjPtr vm,
             if ((ret = virDomainChrSourceDefCopy(&chr->source,
                                                  &((vm->def->serials[0])->source))) != 0)
                 return ret;
-            chr->source.type = VIR_DOMAIN_CHR_TYPE_PTY;
         } else {
             if (chr->source.type == VIR_DOMAIN_CHR_TYPE_PTY &&
                 chr->targetType == VIR_DOMAIN_CHR_CONSOLE_TARGET_TYPE_VIRTIO) {