tests: qemumonitorjson: Replace use of virReportError

Use VIR_TEST_VERBOSE instead. This fixes the following syntax check
problem:

tests/qemumonitorjsontest.c:1409:        virReportError(VIR_ERR_INTERNAL_ERROR, "arr should have been cleared");
Signed-off-by: NPeter Krempa <pkrempa@redhat.com>

tests/qemumonitorjsontest.c

@@ -1406,7 +1406,7 @@ testQemuMonitorJSONqemuMonitorJSONMergeBitmaps(const void *opaque)
         return -1;
 
     if (arr) {
-        virReportError(VIR_ERR_INTERNAL_ERROR, "arr should have been cleared");
+        VIR_TEST_VERBOSE("arr should have been cleared");
         return -1;
     }