xpath: Fix harmless integer overflow in xmlXPathTranslateFunction
diff --git a/xpath.c b/xpath.c
index 83375cd..79778a1 100644
--- a/xpath.c
+++ b/xpath.c
@@ -9369,7 +9369,7 @@
     xmlXPathObjectPtr to;
     xmlBufPtr target;
     int offset, max;
-    xmlChar ch;
+    int ch;
     const xmlChar *point;
     xmlChar *cptr;