[libxslt] Fix check of xsltTestCompMatch return value

[Nick Wellnhofer <nwellnhof src gnome org>]

commit 06d193fabb096370a969ca9f017f60bca7057262
Author: Nick Wellnhofer <wellnhofer aevum de>
Date:   Thu Apr 11 14:06:51 2019 +0200

    Fix check of xsltTestCompMatch return value
    
    xsltTestCompMatch returns -1 in case of errors which wasn't checked in
    most places.
    
    Found when investigating a libFuzzer timeout.

 libxslt/pattern.c | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)
---
diff --git a/libxslt/pattern.c b/libxslt/pattern.c
index 7d660192..55778774 100644
--- a/libxslt/pattern.c
+++ b/libxslt/pattern.c
@@ -2401,7 +2401,7 @@ xsltGetTemplate(xsltTransformContextPtr ctxt, xmlNodePtr node,
            list = NULL;
        while (list != NULL) {
            if (xsltTestCompMatch(ctxt, list, node,
-                                 ctxt->mode, ctxt->modeURI)) {
+                                 ctxt->mode, ctxt->modeURI) == 1) {
                ret = list->template;
                priority = list->priority;
                break;
@@ -2470,7 +2470,7 @@ xsltGetTemplate(xsltTransformContextPtr ctxt, xmlNodePtr node,
        while ((list != NULL) &&
               ((ret == NULL)  || (list->priority > priority))) {
            if (xsltTestCompMatch(ctxt, list, node,
-                                 ctxt->mode, ctxt->modeURI)) {
+                                 ctxt->mode, ctxt->modeURI) == 1) {
                ret = list->template;
                priority = list->priority;
                break;
@@ -2487,7 +2487,7 @@ xsltGetTemplate(xsltTransformContextPtr ctxt, xmlNodePtr node,
            while ((list != NULL) &&
                   ((ret == NULL)  || (list->priority > priority))) {
                if (xsltTestCompMatch(ctxt, list, node,
-                                     ctxt->mode, ctxt->modeURI)) {
+                                     ctxt->mode, ctxt->modeURI) == 1) {
                    ret = list->template;
                    priority = list->priority;
                    break;
@@ -2500,7 +2500,7 @@ xsltGetTemplate(xsltTransformContextPtr ctxt, xmlNodePtr node,
            while ((list != NULL) &&
                   ((ret == NULL)  || (list->priority > priority))) {
                if (xsltTestCompMatch(ctxt, list, node,
-                                     ctxt->mode, ctxt->modeURI)) {
+                                     ctxt->mode, ctxt->modeURI) == 1) {
                    ret = list->template;
                    priority = list->priority;
                    break;
@@ -2515,7 +2515,7 @@ keyed_match:
            while ((list != NULL) &&
                   ((ret == NULL)  || (list->priority > priority))) {
                if (xsltTestCompMatch(ctxt, list, node,
-                                     ctxt->mode, ctxt->modeURI)) {
+                                     ctxt->mode, ctxt->modeURI) == 1) {
                    ret = list->template;
                    priority = list->priority;
                    break;