libyang BUGFIX uninitialized variables

reported by coverity
diff --git a/src/parser_stmt.c b/src/parser_stmt.c
index f13b081..9ad5ca2 100644
--- a/src/parser_stmt.c
+++ b/src/parser_stmt.c
@@ -680,7 +680,7 @@
 {
     struct lysp_type *nest_type;
     const struct lysp_stmt *child;
-    const char *str_path;
+    const char *str_path = NULL;
     LY_ERR ret;
 
     if (type->name) {