Fabian Maurer : winedump: Fix potential null-pointer dereference (cppcheck ).

[Alexandre Julliard]

Module: wine
Branch: master
Commit: b58094f74c2d773f110443ba52b873d1d6a8c829
URL:    http://source.winehq.org/git/wine.git/?a=commit;h=b58094f74c2d773f110443ba52b873d1d6a8c829

Author: Fabian Maurer <dark.shadow4 at web.de>
Date:   Tue Oct  3 17:28:08 2017 +0200

winedump: Fix potential null-pointer dereference (cppcheck).

Signed-off-by: Fabian Maurer <dark.shadow4 at web.de>
Signed-off-by: Alexandre Julliard <julliard at winehq.org>

---

 tools/winedump/pdb.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/tools/winedump/pdb.c b/tools/winedump/pdb.c
index 6a6a9b4..6fd70ce 100644
--- a/tools/winedump/pdb.c
+++ b/tools/winedump/pdb.c
@@ -215,7 +215,8 @@ static void *read_string_table(struct pdb_reader* reader)
     stream_idx = get_stream_by_name(reader, "/names");
     if (stream_idx == -1) return NULL;
     ret = reader->read_file(reader, stream_idx);
-    if (ret && *(const DWORD*)ret == 0xeffeeffe) return ret;
+    if (!ret) return NULL;
+    if(*(const DWORD*)ret == 0xeffeeffe) return ret;
     printf("wrong header %x expecting 0xeffeeffe\n", *(const DWORD*)ret);
     free( ret );
     return NULL;