virBitmap: fix build without HAVE_NUMACTL

Commit 75b198b3e7 forgot to change
arguments of dummy qemuProcessInitNumaMemoryPolicy from char* to
virBitmapPtr.

src/qemu/qemu_process.c

@@ -1798,7 +1798,7 @@ cleanup:
 #else
 static int
 qemuProcessInitNumaMemoryPolicy(virDomainObjPtr vm,
-                                const char *nodemask ATTRIBUTE_UNUSED)
+                                virBitmapPtr nodemask ATTRIBUTE_UNUSED)
 {
     if (vm->def->numatune.memory.nodemask) {
         virReportError(VIR_ERR_INTERNAL_ERROR, "%s",