Roll libxslt to 8345634c5482ca04293ae1862d52fa9dd764aeca

third_party/libxslt/libxslt/preproc.c

Index: third_party/libxslt/libxslt/preproc.c
diff --git a/third_party/libxslt/libxslt/preproc.c b/third_party/libxslt/libxslt/preproc.c
index 955b3b00e4349fd49299d6e4365bbb1c1d5f840d..9a7de532bd69f50ce2f517aacf08f1e895c9a436 100644
--- a/third_party/libxslt/libxslt/preproc.c
+++ b/third_party/libxslt/libxslt/preproc.c
@@ -1418,9 +1418,6 @@ xsltNumberComp(xsltStylesheetPtr style, xmlNodePtr cur) {
 	return;
     cur->psvi = comp;
 
-    if ((style == NULL) || (cur == NULL))
-	return;
-
     comp->numdata.doc = cur->doc;
     comp->numdata.node = cur;
     comp->numdata.value = xsltGetCNsProp(style, cur, (const xmlChar *)"value",
@@ -2343,7 +2340,7 @@ xsltStylePreCompute(xsltStylesheetPtr style, xmlNodePtr inst) {
 	    xsltCheckInstructionElement(style, inst);
 	    inst->psvi = (void *) xsltDocumentComp(style, inst,
 				(xsltTransformFunction) xsltDocumentElem);
-	} else {
+	} else if ((style == NULL) || (style->forwards_compatible == 0)) {
 	    xsltTransformError(NULL, style, inst,
 		 "xsltStylePreCompute: unknown xsl:%s\n", inst->name);
 	    if (style != NULL) style->warnings++;