autofs-5.1.7 - fix possible memory leak in master_parse()

From: Ian Kent <raven@themaw.net>

Coverity: Overwriting "path" in "path = master_strdup(yyvsp[-1].strtype)"
	  leaks the storage that "path" points to.

Signed-off-by: Ian Kent <raven@themaw.net>
---
 CHANGELOG             |    1 +
 daemon/master_parse.y |    2 ++
 2 files changed, 3 insertions(+)

diff --git a/CHANGELOG b/CHANGELOG
index 2186cbe3..b797f6dc 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -52,6 +52,7 @@
 - remove unused variable from get_exports().
 - add missing free in handle_mounts().
 - remove redundant if check.
+- fix possible memory leak in master_parse().
 
 25/01/2021 autofs-5.1.7
 - make bind mounts propagation slave by default.
diff --git a/daemon/master_parse.y b/daemon/master_parse.y
index 08e44b57..7480c36a 100644
--- a/daemon/master_parse.y
+++ b/daemon/master_parse.y
@@ -155,6 +155,8 @@ file: {
 line:
 	| PATH mapspec
 	{
+		if (path)
+			free(path);
 		path = master_strdup($1);
 		if (!path) {
 			local_free_vars();