qemu: add virQEMUCapsSetVAList

And adjust virQEMUCapsSetList to use it. It will also be used in future
patches.
Reviewed-by: NAndrea Bolognani <abologna@redhat.com>
Signed-off-by: NCole Robinson <crobinso@redhat.com>

src/qemu/qemu_capabilities.c

@@ -1664,14 +1664,23 @@ virQEMUCapsSet(virQEMUCapsPtr qemuCaps,
 
 
 void
-virQEMUCapsSetList(virQEMUCapsPtr qemuCaps, ...)
+virQEMUCapsSetVAList(virQEMUCapsPtr qemuCaps,
+                     va_list list)
 {
-    va_list list;
     int flag;
 
-    va_start(list, qemuCaps);
     while ((flag = va_arg(list, int)) < QEMU_CAPS_LAST)
         ignore_value(virBitmapSetBit(qemuCaps->flags, flag));
+}
+
+
+void
+virQEMUCapsSetList(virQEMUCapsPtr qemuCaps, ...)
+{
+    va_list list;
+
+    va_start(list, qemuCaps);
+    virQEMUCapsSetVAList(qemuCaps, list);
     va_end(list);
 }
 

src/qemu/qemu_capabilities.h

@@ -518,6 +518,8 @@ virQEMUCapsPtr virQEMUCapsNew(void);
 void virQEMUCapsSet(virQEMUCapsPtr qemuCaps,
                     virQEMUCapsFlags flag) ATTRIBUTE_NONNULL(1);
 
+void virQEMUCapsSetVAList(virQEMUCapsPtr qemuCaps,
+                          va_list list) ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2);
 void virQEMUCapsSetList(virQEMUCapsPtr qemuCaps, ...) ATTRIBUTE_NONNULL(1);
 
 void virQEMUCapsClear(virQEMUCapsPtr qemuCaps,