Introduce virXMLValidatorFree

Split out the code cleaning up the validator.

src/libvirt_private.syms

@@ -2565,6 +2565,7 @@ virXMLPickShellSafeComment;
 virXMLPropString;
 virXMLSaveFile;
 virXMLValidateAgainstSchema;
+virXMLValidatorFree;
 virXPathBoolean;
 virXPathInt;
 virXPathLong;

src/util/virxml.c

@@ -1161,11 +1161,21 @@ virXMLValidateAgainstSchema(const char *schemafile,
     ret = 0;
 
  cleanup:
+    virXMLValidatorFree(validator);
+    return ret;
+}
+
+
+void
+virXMLValidatorFree(virXMLValidatorPtr validator)
+{
+    if (!validator)
+        return;
+
     VIR_FREE(validator->schemafile);
     virBufferFreeAndReset(&validator->buf);
     xmlRelaxNGFreeParserCtxt(validator->rngParser);
     xmlRelaxNGFreeValidCtxt(validator->rngValid);
     xmlRelaxNGFree(validator->rng);
     VIR_FREE(validator);
-    return ret;
 }

src/util/virxml.h

@@ -192,5 +192,7 @@ typedef virXMLValidator *virXMLValidatorPtr;
 int
 virXMLValidateAgainstSchema(const char *schemafile,
                             xmlDocPtr xml);
+void
+virXMLValidatorFree(virXMLValidatorPtr validator);
 
 #endif                          /* __VIR_XML_H__ */