Protect against an improper call to free in r_format_val.

1 files changed, 1 insertions, 1 deletions

diff --git a/node.c b/node.c
index 58b54561..2c099bd6 100644
--- a/node.c
+++ b/node.c
@@ -272,7 +272,7 @@ r_format_val(const char *format, int index, NODE *s)
 			s->flags |= STRING;
 		}
 	}
-	if (s->stptr != NULL)
+	if ((s->flags & STRCUR) != 0)
 		efree(s->stptr);
 	emalloc(s->stptr, char *, s->stlen + 1, "format_val");
 	memcpy(s->stptr, sp, s->stlen + 1);