opkg: fix some initialisation and double free issues in libbb

git-svn-id: http://opkg.googlecode.com/svn/trunk@85 e8e0d7a0-c8d9-11dd-a880-a1081c7ac358

1 files changed, 4 insertions, 1 deletions

diff --git a/libbb/unzip.c b/libbb/unzip.c
index 3826316..fb2429b 100644
--- a/libbb/unzip.c
+++ b/libbb/unzip.c
@@ -71,7 +71,7 @@ static FILE *in_file, *out_file;
 
 /* these are freed by gz_close */
 static unsigned char *window;
-static unsigned long *crc_table;
+static unsigned long *crc_table = NULL;
 
 static unsigned long crc; /* shift register contents */
 
@@ -1020,6 +1020,9 @@ extern int unzip(FILE *l_in_file, FILE *l_out_file)
 	free(window);
 	free(crc_table);
 
+	window = NULL;
+	crc_table = NULL;
+
 	return exit_code;
 }