[libxml2] Correct spelling of "calling"

[Daniel Veillard <veillard src gnome org>]

commit 73c50805d9302263a1118356bc2553b441b31b33
Author: Alex Henrie <alexhenrie24 gmail com>
Date:   Mon Oct 26 18:33:14 2015 +0800

    Correct spelling of "calling"

 xmlschemas.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/xmlschemas.c b/xmlschemas.c
index d47512f..fe533e6 100644
--- a/xmlschemas.c
+++ b/xmlschemas.c
@@ -25546,7 +25546,7 @@ xmlSchemaVAttributesComplex(xmlSchemaValidCtxtPtr vctxt)
                    if (xmlNewProp(defAttrOwnerElem,
                        iattr->localName, value) == NULL) {
                        VERROR_INT("xmlSchemaVAttributesComplex",
-                           "callling xmlNewProp()");
+                           "calling xmlNewProp()");
                        if (normValue != NULL)
                            xmlFree(normValue);
                        goto internal_error;