fixed potential crash incase of a bad stylesheet

diff --git a/libxslt/xslt.c b/libxslt/xslt.c
index 2750921..5bc3863 100644 (file)
--- a/libxslt/xslt.c
+++ b/libxslt/xslt.c
@@ -1983,12 +1983,14 @@ xsltParseStylesheetImportedDoc(xmlDocPtr doc) {
        xsltFreeStylesheet(ret);
        ret = NULL;
     }
-    if (ret->errors != 0) {
-       ret->doc = NULL;
-       xsltFreeStylesheet(ret);
-       ret = NULL;
+    if (ret != NULL) {
+       if (ret->errors != 0) {
+           ret->doc = NULL;
+           xsltFreeStylesheet(ret);
+           ret = NULL;
+       }
     }
-
+    
     return(ret);
 }