malloc-fail: Fix memory leak in xmlXPathTryStreamCompile

Found with libFuzzer, see #344.

1 files changed, 1 insertions, 0 deletions

diff --git a/xpath.c b/xpath.c
index 18e3d72c..6e7fc032 100644
--- a/xpath.c
+++ b/xpath.c
@@ -14138,6 +14138,7 @@ xmlXPathTryStreamCompile(xmlXPathContextPtr ctxt, const xmlChar *str) {
 	    comp = xmlXPathNewCompExpr();
 	    if (comp == NULL) {
 		xmlXPathErrMemory(ctxt, "allocating streamable expression\n");
+	        xmlFreePattern(stream);
 		return(NULL);
 	    }
 	    comp->stream = stream;