[PATCH][next] modpost: close file when fstat fails

[Colin King]

From: Colin Ian King <colin.k...@canonical.com>

Currently a failed fstat error return path fails to close an open file.
Fix this by setting buf to NULL and returning via the error exit path.

Addresses-Coverity: ("Resource leak");
Fixes: commit 076ad831dfe8 ("modpost: add read_text_file() and get_line() 
helpers")
Signed-off-by: Colin Ian King <colin.k...@canonical.com>
---
 scripts/mod/modpost.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/scripts/mod/modpost.c b/scripts/mod/modpost.c
index e4691127f051..3012e5f8ec7e 100644
--- a/scripts/mod/modpost.c
+++ b/scripts/mod/modpost.c
@@ -109,8 +109,10 @@ char *read_text_file(const char *filename)
        if (fd < 0)
                return NULL;
 
-       if (fstat(fd, &st) < 0)
-               return NULL;
+       if (fstat(fd, &st) < 0) {
+               buf = NULL;
+               goto close;
+       }
 
        buf = NOFAIL(malloc(st.st_size + 1));
 
-- 
2.25.1