Roll libxslt to 96c9c644f30ed762735802a27784cc522cff1643

third_party/libxslt/libxslt/templates.c

Index: third_party/libxslt/libxslt/templates.c
diff --git a/third_party/libxslt/libxslt/templates.c b/third_party/libxslt/libxslt/templates.c
index 02193f7eef7e04ed71e2136b9b099ac3a6ddcb5e..ad83dce8fd1d8affb11524eeb3e0bbe8ae6bdc02 100644
--- a/third_party/libxslt/libxslt/templates.c
+++ b/third_party/libxslt/libxslt/templates.c
@@ -63,6 +63,12 @@ xsltEvalXPathPredicate(xsltTransformContextPtr ctxt, xmlXPathCompExprPtr comp,
     xmlNodePtr oldInst;
     int oldProximityPosition, oldContextSize;
 
+    if ((ctxt == NULL) || (ctxt->inst == NULL)) {
+        xsltTransformError(ctxt, NULL, NULL,
+            "xsltEvalXPathPredicate: No context or instruction\n");
+        return(0);
+    }
+
     oldContextSize = ctxt->xpathCtxt->contextSize;
     oldProximityPosition = ctxt->xpathCtxt->proximityPosition;
     oldNsNr = ctxt->xpathCtxt->nsNr;
@@ -124,6 +130,12 @@ xsltEvalXPathStringNs(xsltTransformContextPtr ctxt, xmlXPathCompExprPtr comp,
     int oldNsNr;
     xmlNsPtr *oldNamespaces;
 
+    if ((ctxt == NULL) || (ctxt->inst == NULL)) {
+        xsltTransformError(ctxt, NULL, NULL,
+            "xsltEvalXPathStringNs: No context or instruction\n");
+        return(0);
+    }
+
     oldInst = ctxt->inst;
     oldNode = ctxt->node;
     oldPos = ctxt->xpathCtxt->proximityPosition;