[libxml2] Fix memory leak in runtest.c

[Nick Wellnhofer <nwellnhof src gnome org>]

commit e1c2d0adf02692fd668cfbb7025db437f1f5490b
Author: Nick Wellnhofer <wellnhofer aevum de>
Date:   Sun Aug 16 22:22:57 2020 +0200

    Fix memory leak in runtest.c

 runtest.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)
---
diff --git a/runtest.c b/runtest.c
index 19ed629f3..0f178cb05 100644
--- a/runtest.c
+++ b/runtest.c
@@ -2108,16 +2108,16 @@ errParseTest(const char *filename, const char *result, const char *err,
            xmlDocDumpMemory(doc, (xmlChar **) &base, &size);
        }
        res = compareFileMem(result, base, size);
-       if (res != 0) {
-           fprintf(stderr, "Result for %s failed in %s\n", filename, result);
-           return(-1);
-       }
     }
     if (doc != NULL) {
        if (base != NULL)
            xmlFree((char *)base);
        xmlFreeDoc(doc);
     }
+    if (res != 0) {
+        fprintf(stderr, "Result for %s failed in %s\n", filename, result);
+        return(-1);
+    }
     if (err != NULL) {
        res = compareFileMem(err, testErrors, testErrorsSize);
        if (res != 0) {