[PATCH 1/1] msi: Avoid invalid access when handling format strings.

[Nikolay Sivov]

From: Nikolay Sivov

---
 dlls/msi/format.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/dlls/msi/format.c b/dlls/msi/format.c
index 5301752a41a..0daebece21e 100644
--- a/dlls/msi/format.c
+++ b/dlls/msi/format.c
@@ -739,7 +739,13 @@ static BOOL verify_format(LPWSTR data)

while (*data)
     {
-        if (*data == '[' && *(data - 1) != '\')
+        if (*data == '\' && *(data + 1) == '[')
+        {
+            data += 2;
+            continue;
+        }
+
+        if (*data == '[')
             count++;
         else if (*data == ']')
             count--;