esx: Initialize all instances of esxVMX_Data to zero

To avoid using or freeing uninitialized memory or pointers.

src/esx/esx_driver.c

@@ -2698,10 +2698,11 @@ esxDomainGetXMLDesc(virDomainPtr domain, unsigned int flags)
     char *vmx = NULL;
     virVMXContext ctx;
     esxVMX_Data data;
-    data.datastorePathWithoutFileName = NULL;
     virDomainDefPtr def = NULL;
     char *xml = NULL;
 
+    memset(&data, 0, sizeof (data));
+
     if (esxVI_EnsureSession(priv->primary) < 0) {
         return NULL;
     }
@@ -2805,6 +2806,8 @@ esxDomainXMLFromNative(virConnectPtr conn, const char *nativeFormat,
     virDomainDefPtr def = NULL;
     char *xml = NULL;
 
+    memset(&data, 0, sizeof (data));
+
     if (STRNEQ(nativeFormat, "vmware-vmx")) {
         ESX_ERROR(VIR_ERR_INVALID_ARG,
                   _("Unsupported config format '%s'"), nativeFormat);
@@ -2844,6 +2847,8 @@ esxDomainXMLToNative(virConnectPtr conn, const char *nativeFormat,
     virDomainDefPtr def = NULL;
     char *vmx = NULL;
 
+    memset(&data, 0, sizeof (data));
+
     if (STRNEQ(nativeFormat, "vmware-vmx")) {
         ESX_ERROR(VIR_ERR_INVALID_ARG,
                   _("Unsupported config format '%s'"), nativeFormat);
@@ -3066,6 +3071,8 @@ esxDomainDefineXML(virConnectPtr conn, const char *xml)
     char *taskInfoErrorMessage = NULL;
     virDomainPtr domain = NULL;
 
+    memset(&data, 0, sizeof (data));
+
     if (esxVI_EnsureSession(priv->primary) < 0) {
         return NULL;
     }